AIS Squash Lake
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Eurasian milfoil has infected Squash Lake and is adversely impacting the aquatic ecosystem. It forms dense canopies that shade out native plants, provides poor habitat, and increases nutrients in the water column. Dense milfoil mats also alter water quality, provide breeding grounds for mosquitoes, and interfere with recreational activities. Local volunteers are needed to help protect Crescent Lake through the Clean Boats-Clean Waters program.
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The Inland Fisheries Ireland (IFI) was established in 2010 under the Inland Fisheries Act to protect, manage, and conserve Ireland's inland fisheries resources. IFI is responsible for considering biodiversity and sustainable development in its functions. Clean water with adequate dissolved oxygen is important for fish survival. Sources of water pollution include point sources like wastewater and diffuse sources like agriculture runoff. Pollution can negatively impact water quality and habitat for fish.
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Estuary biome
Estuaries are bodies of water where freshwater from rivers meets and mixes with saltwater from the ocean. They provide important habitat for many fish and shellfish, with 2/3 of fish and shellfish species spending time in estuaries. Estuaries support complex food webs and nutrient cycles. However, they face threats from activities like dam construction, pollution from agriculture, and climate change, which can disrupt ecosystems. Conservation efforts aim to protect estuaries by restricting dams, reducing pollution, and regulating water use.
Fresh water and marine ecosystems
This document summarizes freshwater and marine ecosystems. It discusses the key features and threats to various ecosystems, including lakes/ponds, wetlands, rivers, estuaries, coral reefs, the ocean, and polar regions. The main types of freshwater ecosystems described are lakes/ponds, which have littoral, open water, and benthic zones, and wetlands like marshes and swamps. Threats to these ecosystems include pollution from industry, agriculture, and development. Marine ecosystems discussed include estuaries where fresh and saltwater mix, coral reefs built by polyps in warm tropical seas, the ocean with its depths lacking light, and polar regions relying on phytoplankton
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The coral reefs of the Caribbean are threatened with extinction due to four main factors:
1) Rising sea levels are causing coral bleaching and drowning of reefs as they cannot keep up with the growth rate of seas. The 2005 bleaching event in the Caribbean severely damaged reefs.
2) Overfishing has led to an 80% reduction in fish biomass in some areas like Jamaica in the 1960s and damage to coral from loss of parrotfish and other species.
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Water pollution comes from many sources and can harm living organisms and make water unsuitable for use. Major sources of water pollution include runoff from agricultural lands containing pesticides and fertilizers; discharge from industrial facilities containing chemicals and heavy metals; and leakage from landfills and underground storage tanks containing hazardous waste. Water pollution can contaminate both surface water sources like rivers and lakes as well as groundwater sources. If not prevented and reduced, water pollution can create oxygen-depleted zones in bodies of water, contaminate sediments, and close beaches and shellfish beds.
Economic benifits of estuary system
Estuaries provide economic benefits through tourism, the food industry, and protection of infrastructure. They support fisheries and commercial activities that supply natural resources for tourism destinations like the Puerto Princesa Underground River. Products from estuaries like scallops, clams, oysters, and mussels are a major contributor to the aquatic industry. Estuaries also protect coastal areas and support important public infrastructure by serving as harbors and ports vital for shipping, transportation, and industry.
Characteristics of an estuary
The document discusses the key characteristics of estuaries like San Miguel Bay, including high sediment output creating muddy substrates, high nutrient inputs resulting in high productivity, and highly variable salinity gradients allowing floral and faunal assemblages tolerant of wide salinity fluctuations. It also notes estuaries provide essential habitat for many commercially and recreationally caught fish species and are highly productive ecosystems due to nutrient mixing from land and sea, though increasing pollution threatens estuaries.
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Estuary biome
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The coral reefs of the Caribbean are threatened with extinction due to four main factors:
1) Rising sea levels are causing coral bleaching and drowning of reefs as they cannot keep up with the growth rate of seas. The 2005 bleaching event in the Caribbean severely damaged reefs.
2) Overfishing has led to an 80% reduction in fish biomass in some areas like Jamaica in the 1960s and damage to coral from loss of parrotfish and other species.
3) Pollution from coastal development, sewage, and runoff is smothering corals and lowering water quality, allowing more algal growth. Less than 10% of Caribbean reefs now have live coral
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Water pollution comes from many sources and can harm living organisms and make water unsuitable for use. Major sources of water pollution include runoff from agricultural lands containing pesticides and fertilizers; discharge from industrial facilities containing chemicals and heavy metals; and leakage from landfills and underground storage tanks containing hazardous waste. Water pollution can contaminate both surface water sources like rivers and lakes as well as groundwater sources. If not prevented and reduced, water pollution can create oxygen-depleted zones in bodies of water, contaminate sediments, and close beaches and shellfish beds.
Economic benifits of estuary system
Estuaries provide economic benefits through tourism, the food industry, and protection of infrastructure. They support fisheries and commercial activities that supply natural resources for tourism destinations like the Puerto Princesa Underground River. Products from estuaries like scallops, clams, oysters, and mussels are a major contributor to the aquatic industry. Estuaries also protect coastal areas and support important public infrastructure by serving as harbors and ports vital for shipping, transportation, and industry.
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The document discusses the key characteristics of estuaries like San Miguel Bay, including high sediment output creating muddy substrates, high nutrient inputs resulting in high productivity, and highly variable salinity gradients allowing floral and faunal assemblages tolerant of wide salinity fluctuations. It also notes estuaries provide essential habitat for many commercially and recreationally caught fish species and are highly productive ecosystems due to nutrient mixing from land and sea, though increasing pollution threatens estuaries.
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Estuaries are coastal bodies of water where freshwater from rivers meets and mixes with saltwater from the sea. They exist in a transitional zone where tidal effects and freshwater inputs influence the environment. Estuaries come in different forms depending on their geological origin and range from coastal plain and bar-built systems to tectonic and fjord-type estuaries. India has many economically and ecologically important estuaries located mainly along its eastern coastline that are threatened by pollution, development, and other human impacts.
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Mat-forming algae typically begin around the edges and bottoms of bodies of water in the spring. They can form surface scums and impair recreational activities by providing too much shelter for small fish. They also reduce predation, cause fish kills, impart foul tastes and odors to water, impede water flow, trap sediment and debris, provide quiet water which lessens aesthetic appeal and lowers property values, and destroy stands of native vegetation. Common control methods include hand pulling, raking plants, and using motor-driven weed harvesters with underwater cutting blades.
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Estuaries are bodies of water where freshwater rivers meet saltwater oceans, forming brackish water. They support rich ecosystems but are threatened by pollution and climate change. The Chesapeake Bay estuary is suffering from agricultural and industrial runoff, which is lowering oxygen levels and harming fish and crab populations. Rising sea levels and warmer water temperatures due to global warming are eroding wetlands and stressing native species in estuaries like Delaware Bay. Protecting these vital ecosystems is important for wildlife and coastal communities.
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Forests, land, beaches, wetlands, seas, and natural landscapes all provide resources that can be misused by tourism. Specifically:
1) Nature tours and souvenirs can overuse forest resources by removing rare species and trees, causing soil erosion.
2) Hotels and golf courses disrupt ecosystems when they remove land from agriculture and pollute soil and water with chemicals.
3) Building hotels too close to beaches and on wetlands increases erosion and reduces natural flood defenses, while dredging disrupts ecosystems.
4) Marine activities like diving and boating can damage coral reefs by breaking off coral and anchoring ships, while sewage dumping pollutes water.
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2013 03 fish in the severn estuary - richard seaby
The Severn Estuary Forum is a key annual event in its eighth year and hosted by the Severn Estuary Partnership: an independent, estuary-wide initiative, involving all those interested in the management of the estuary, from planners to port authorities, fishermen to farmers.
This year’s Forum was opened by the Lord Mayor of Gloucester and supported by CIWEM. It focussed on a number of diverse topics, including the upper estuary; renewable energy possibilities; a review of the Severn Estuary Flood Risk Management Strategy; an overview of the operations and maintenance of the Severn River Crossings; Local Enterprise Partnerships; The Bristol Deep Sea Container Terminal; proposals for a Severnside Airport and Fisheries amongst others.
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3) Many people earn livelihoods from activities near estuaries like fishing, aquaculture, and ecotourism.
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Estuaries-Where River meets the sea.
Estuaries are coastal bodies of water where freshwater from rivers meets and mixes with saltwater from the sea. They exist in a transitional zone where tidal effects and freshwater inputs influence the environment. Estuaries come in different forms depending on their geological origin and range from coastal plain and bar-built systems to tectonic and fjord-type estuaries. India has many economically and ecologically important estuaries located mainly along its eastern coastline that are threatened by pollution, development, and other human impacts.
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Mat-forming algae typically begin around the edges and bottoms of bodies of water in the spring. They can form surface scums and impair recreational activities by providing too much shelter for small fish. They also reduce predation, cause fish kills, impart foul tastes and odors to water, impede water flow, trap sediment and debris, provide quiet water which lessens aesthetic appeal and lowers property values, and destroy stands of native vegetation. Common control methods include hand pulling, raking plants, and using motor-driven weed harvesters with underwater cutting blades.
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The document summarizes key aspects of estuaries, including their global distribution, types, biodiversity, and human impacts. Estuaries are found where rivers meet oceans, with notable examples including Chesapeake Bay and the Amazon River. They contain salt marshes or mangroves and experience fluctuating salinity levels from tides, seasons, and rainfall. Estuaries support abundant life and are heavily populated areas, but have been degraded by industrialization through dumping, development, and destruction of habitats.
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Coral reefs are located in tropical oceans near the equator. The largest is the Great Barrier Reef in Australia and the second largest is off the coast of Belize in Central America. Coral reef protection aims to maintain healthy reefs by addressing both natural and human-induced stressors, which can range from negligible to catastrophic effects. Cold-water coral reefs also exist in Scotland and form habitats and shelters for many fish species. Coral reefs are extremely biodiverse ecosystems, home to millions of species including fish, corals, lobsters, clams, seahorses and sea turtles.
Abiotic and Biotic Factors in Estuaries
There are different living factors( biotic) and non-living factors (abiotic) that can be found in the estuarine system.
interactions among living things in estuary
The document discusses the various living and non-living components of an estuary ecosystem, including organisms like plankton, oysters, mangroves and abiotic factors such as waves, salinity, temperature and soil types. It describes the interactions between these biotic and abiotic elements and how they form complex food webs and habitats within estuaries, which are dynamic coastal environments influenced by both land and sea processes.
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This document groups bodies of water into flowing water like streams and rivers, and still water like lakes and ponds. It also discusses different aquatic ecosystems like estuaries where freshwater and ocean ecosystems meet, and marshes and swamps that are wet during some or all of the year. Algae lives near the ocean's surface to photosynthesize using sunlight.
Estuaries
Estuaries are areas where freshwater and seawater mix, found around the world. They contain aquatic plants like sea lavender and seagrass, and house many animals such as mussels, shrimp, worms and birds. Estuaries were once destroyed by human development but are now recognized as valuable ecosystems that help fish populations and ocean water quality.
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Coral reefs are biologically diverse ecosystems home to many organisms. The Great Barrier Reef is the world's largest coral reef system, located off Australia, but it is threatened by human impacts. Climate change is a major threat as it causes rising water temperatures, harming corals. Pollution from agricultural and urban runoff introduces sediments, nutrients and chemicals onto the reef. Overfishing and trawling also damage corals and disrupt the ecosystem. Mass coral bleaching events, caused by warm water, have already damaged parts of the Great Barrier Reef. Increased shipping and coastal development bring additional pollution risks to the fragile reef system.
Freshwater ecosystems
Freshwater ecosystems include streams, rivers, ponds, lakes, and wetlands. Streams join to form larger rivers. Ponds and lakes have three zones - a littoral zone near shore with plants, an open-water zone where sunlight reaches, and a deep-water zone without sunlight. Wetlands soak up flood waters and replenish groundwater. They include marshes with grasses and swamps with trees. Over time, a lake can fill in with sediment and transform into a forest. The ocean contains diverse ecosystems shaped by temperature, depth, and sunlight. It has zones like intertidal, neritic, oceanic, and benthic that support different life.
Estuaries
Estuaries are bodies of water where freshwater rivers meet saltwater oceans, forming brackish water. They support rich ecosystems but are threatened by pollution and climate change. The Chesapeake Bay estuary is suffering from agricultural and industrial runoff, which is lowering oxygen levels and harming fish and crab populations. Rising sea levels and warmer water temperatures due to global warming are eroding wetlands and stressing native species in estuaries like Delaware Bay. Protecting these vital ecosystems is important for wildlife and coastal communities.
Environmental resource protection
Forests, land, beaches, wetlands, seas, and natural landscapes all provide resources that can be misused by tourism. Specifically:
1) Nature tours and souvenirs can overuse forest resources by removing rare species and trees, causing soil erosion.
2) Hotels and golf courses disrupt ecosystems when they remove land from agriculture and pollute soil and water with chemicals.
3) Building hotels too close to beaches and on wetlands increases erosion and reduces natural flood defenses, while dredging disrupts ecosystems.
4) Marine activities like diving and boating can damage coral reefs by breaking off coral and anchoring ships, while sewage dumping pollutes water.
Estuary Notes
Estuaries are semi-enclosed areas where fresh water and seawater meet and mix, forming one of the most productive environments on earth. They serve as protected habitat and vital breeding and feeding grounds for many species. Cities were often built near estuaries due to the abundance of seafood. There are four main types of estuaries that form from different geological processes: drowned river valleys, bar-built, tectonic, and fjords. Estuaries have varying salinity levels and substrates that influence the distribution of species and ecological processes within them.
2013 03 fish in the severn estuary - richard seaby
The Severn Estuary Forum is a key annual event in its eighth year and hosted by the Severn Estuary Partnership: an independent, estuary-wide initiative, involving all those interested in the management of the estuary, from planners to port authorities, fishermen to farmers.
This year’s Forum was opened by the Lord Mayor of Gloucester and supported by CIWEM. It focussed on a number of diverse topics, including the upper estuary; renewable energy possibilities; a review of the Severn Estuary Flood Risk Management Strategy; an overview of the operations and maintenance of the Severn River Crossings; Local Enterprise Partnerships; The Bristol Deep Sea Container Terminal; proposals for a Severnside Airport and Fisheries amongst others.
These engaging and exciting events are intended for all interested in learning about the latest research and policy developments dealing with the Severn Estuary and its future, and always guarantee a lively and informative day of presentations and talks. They offer a unique opportunity to learn from others, share ideas and participate in the management of the Severn Estuary.
Freshwater Ecosystems
Freshwater ecosystems include rivers, streams, lakes, ponds, and wetlands. They make up a small fraction of the Earth's total water but support a diversity of habitats and species. Rivers and streams flow with cold, oxygen-rich water and can broaden and slow downstream. Lakes and ponds differ in size, with ponds being smaller and sometimes seasonal. Wetlands, including marshes and swamps, act as filters to clean water and protect shorelines from erosion. Freshwater ecosystems face threats from pollution and development.
Estuaries
Estuaries are partially enclosed coastal bodies of water where freshwater from rivers and streams mixes with saltwater from the ocean. They are highly productive environments that support many species of plants and animals adapted to the transition between fresh and salt water. Estuaries come in four types depending on their formation: coastal plain, tectonic, bar-built, and fjords. They provide important ecological, economic, and environmental benefits but are threatened by increasing development and pollution from coastal populations.
Ben's coral reef
Coral reefs are the most diverse marine habitats, formed through the slow growth of corals and their symbiotic relationship with algae. Framework builders like corals and algae precipitate calcium carbonate to slowly build the reef structure upward over time. This creates a topographically complex environment that is home to thousands of fish and invertebrate species. However, coral reefs are threatened by overfishing, careless tourism, pollution, and other human impacts that can damage their delicate ecosystems.
Water Management
The document discusses various sources of river pollution including fertilizers from farming, warmer water and lower oxygen levels from power stations, and untreated domestic sewage. It also outlines how rivers are used for leisure, transport, industry, farming, and generating electricity. The Environmental Agency monitors water quality, promotes wildlife conservation, controls fishing, and manages water treatment to help regulate water management.
Five classification of an estuarine ecosystem
This document outlines 5 classifications of estuarine ecosystems according to Howard T. Odum:
1. Physically stressed systems that experience high energy waves, currents, temperature/salinity fluctuations or sedimentation. These systems have low diversity but include rocky shores, tidal channels, and man-made canals.
2. Arctic ecosystems with ice stress, including glacial fjords and winter ice zones, which experience light, temperature, and ice limitations.
3. Temperate coastal ecosystems with seasonal programming, like drowned river valleys and embayments, that experience seasonal pulses in productivity and reproduction.
4. Tropical coastal ecosystems of high diversity that experience low physical stresses, allowing greater diversity,
Estuaries
1) Estuaries are areas where rivers meet the sea, resulting in brackish water.
2) Estuaries are important habitats that support many organisms for breeding and spawning, including birds, fish, amphibians, insects, algae, and crustaceans.
3) Many people earn livelihoods from activities near estuaries like fishing, aquaculture, and ecotourism.
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2013 03 fish in the severn estuary - richard seaby
2013 03 fish in the severn estuary - richard seaby
Similar to AIS Squash Lake
New microsoft office word document
This document provides information on managing farm ponds for fishing. It discusses the importance of proper pond construction, watershed management, fish removal, liming, fertilization, and species selection. Key points include enhancing plankton populations through fertilization to increase oxygen and food availability for fish, maintaining a balance of predator and prey populations through harvesting, and controlling weeds and preventing fish kills. Farm ponds require ongoing management to provide productive recreational fishing.
Pond Ecosystem 1349878487848484888484.pptx
There are several types of pond ecosystems, including garden ponds, salt ponds, fish ponds, ephemeral ponds, freshwater ponds, kettle ponds, and mountain ponds. Garden ponds are human-made and host ornamental plants and animals from around the world. Salt ponds contain salty water and form near coastlines. Fish ponds are also human-made and maintain various fish species. Ephemeral ponds only form during periods of heavy rainfall and support species like salamanders. Kettle ponds form in depressions left by retreating glaciers. Mountain ponds are located in mountainous areas and support rare species.
Effect of dam on biodiversity
constructing dams may create adverse environmental impacts, sometimes leads to decline of biodiversity.
Croatan sound
North Carolina's Outer Banks is home to many beautiful estuaries. Estuaries are coastal areas with shallow waters that are mixed with sea water and freshwater flowing from watersheds. These areas are known as nurseries for thousands of species of sea creatures. Sea turtles come ashore to lay their eggs and when those hatch, the baby turtles scramble back toward the ocean where they will live out their lives. Fish, manatee, sharks, starfish, and many other species are at home in the Croatan Sound Estuary.
Freshwater
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The document discusses various types and causes of water pollution resulting from human activities. It outlines different pollutants like oxygen-depleting wastes, plant nutrients, chemicals, sediments, radioactive isotopes, thermal pollution and oil that can pollute water. Specific causes mentioned include mining, agriculture, deforestation, oil spills, industrial waste, and nuclear energy. The impacts of water pollution include reduced oxygen in water, algal blooms, spread of diseases and eutrophication. Proper waste water treatment, sustainable practices, and pollution prevention are recommended to address the issue.
Water quality parameters
This document discusses the important physical, chemical, and biological properties for successful fish pond culture. It covers factors like temperature, depth, turbidity, light, dissolved oxygen, pH, carbon dioxide, hardness, alkalinity, ammonia, phosphorus, and dissolved solids. Maintaining optimal ranges for these various properties can ensure high fish productivity, prevent disease outbreaks, and support healthy aquatic ecosystems in the pond. The document emphasizes how closely managing water quality, food production, and fish health are interlinked for sustainable aquaculture.
Future of Lake Tahoe
The document discusses the changing underwater ecosystem of Lake Tahoe, noting that invasive species like Eurasian watermilfoil have rapidly spread in recent years. This will disrupt the lake's food web and ecology. The divers conservancy proposes a three-point plan to assess the invasive species, contain their spread, and remove them from the lake.
Eutrophication presentation2
Eutrophication of aquatic ecosystems can have both temporary and more permanent negative effects. It may lead to algal blooms that reduce dissolved oxygen in the water through plant respiration and decay, potentially killing invertebrates and fish. Certain algal species can also produce toxins harmful to other organisms. Long term, eutrophication decreases biodiversity as nutrient-tolerant species outcompete others. If left unchecked, eutrophication poses serious risks to both aquatic life and humans who rely on those ecosystems.
Classification of lakes
Lakes are helpful in controlling weather and local climate. Lakes are helpful for creating irrigation facilities and recreation. In some places, lakes are good sources for water supply for drinking. Every lake, is unique in terms of its size, morphometry, water availability, water chemistry, physics, hydrology and biology. There are several type, kinds and categories of lakes in the world.
Marine Ecosystem
1. The document discusses various types of aquatic ecosystems including estuaries, mangrove swamps, coral reefs, rocky shores, sandy beaches, and barrier islands. It describes the key features and organisms found in each.
2. Coastal ecosystems like estuaries and mangrove swamps provide many important ecological services including habitat, nurseries for marine life, and protection from storms. They also have economic value through fisheries, recreation, and tourism.
3. Coral reefs have exceptionally high biodiversity but are very vulnerable to threats like bleaching from rising water temperatures, ocean acidification, pollution, and destructive fishing practices. Widespread damage to coral reefs could have serious ecological and economic
NSEA FINAL SalmonInTheNearshore brochure
The nearshore provides critical habitat for salmon and other marine species. It includes tidally influenced streams and rivers, shoreline bluffs, beaches, and shallow waters. In the nearshore, eelgrass beds provide refuge and food for young salmon, and forage fish lay their eggs on beaches and aquatic vegetation. Native riparian plants along the shoreline provide habitat and shade to protect forage fish eggs. The nearshore is where salmon undergo smoltification as they adapt between fresh and saltwater, relying on the rich food web and refuge from predators.
Ocean acidification
Ocean acidification is a term used to describe the changes in the chemistry of the Earth’s ocean i.e. ongoing decrease in the pH and increase in acidity caused by the uptake of anthropogenic carbon dioxide from the atmosphere causing major problems for the coral reefs and other organisms.
Lakes
Lakes are inland bodies of fresh water formed in depressions on the land surface. They are found all over the world but are most common in high latitude and mountainous regions. Lakes form through processes such as glacial erosion and deposition, shifts in the Earth's crust, volcanic activity, and landslides. Lakes stratify into layers based on water temperature and density. In temperate lakes, seasonal changes cause the layers to mix, replenishing oxygen levels. Lakes support a variety of plant and animal life adapted to different depths and oxygen conditions. Human activities can negatively impact lakes through pollution, development, and other disturbances.
9 - Norfolk Broads (Tessa)
The Broads were formed by medieval peat digging that was later flooded, creating navigable rivers and lakes. However, human activities like farming, sewage, and boating are threatening the Broads through eutrophication and erosion. Eutrophication is caused by excess nutrients like nitrates and phosphates entering the water from fertilizers and sewage, causing rapid algae growth that depletes oxygen levels and kills plants and animals. Vegetation succession from plant growth can also fill in the Broads over time if left unchecked. Constant siltation and loss of habitats are reducing biodiversity in the protected wetland.
Estuaries ecosystem
Estuaries Ecosystem : Where River Meets Ocean
Everything about estuary ecosystem has been elaborated including Introduction, Types, Physical and Chemical Characteristics , Biota, Marsh Lands, Mangrove Forests, Food Web, Threats, Conservation, Restoration etc....
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AIS Squash Lake
- 1. Aquatic Invasive Species (AIS) have infected Squash lake. Now is the time to be proactive Help Protect Crescent Lake! 1 Crescent Lake Association
- 2. 2 SOME FACTS Eurasian milfoil adversely impacts aquatic ecosystems by forming dense canopies that often shade out native vegetation. Monospecific stands of Eurasian milfoil provide poor habitat for waterfowl, fish, and other wildlife. Significant rates of plant sloughing and leaf turnover, as well as the decomposition of high biomass at the end of the growing season, increase the internal loading of phosphorus and nitrogen to the water column. Dense Eurasian milfoil mats alter water quality by raising pH, decreasing oxygen under the mats, and increasing temperature. Eurasian milfoil impacts power generation and irrigation by clogging dam trash racks and intake pipes. Stagnant water created by Eurasian milfoil mats provides good breeding grounds for mosquitoes. Eurasian milfoil interferes with recreational activities such as swimming, boating, fishing and water skiing.
- 3. 3 Crescent Lake Association
- 4. 4 Crescent Lake Association
- 5. 5 Crescent Lake Association
- 6. 6 Crescent Lake Association
- 7. 7 Crescent Lake Association
- 8. 8 Crescent Lake Association
- 9. 9 Crescent Lake Association
- 10. 10 Crescent Lake Association
- 11. 11 Crescent Lake Association
- 12. YOU CAN MAKE A DIFFERENCEVolunteer For Clean Boats-Clean Waters 12 Crescent Lake 2009 Squash Lake 2009 Crescent Lake Association – photos used by permission from StephBoismenue