This document summarizes a study on the effects of mowing grassland set-asides (GSAs) on raptor behavior in the Fraser River Delta. The study compared mown and unmown GSAs of different ages and measured vegetation cover, small mammal abundance, and northern harrier hunting behaviors. Key findings include greater vegetation cover in unmown GSAs, low small mammal abundance possibly due to population cycles, and a preference by northern harriers for hunting in unmown GSAs over 1 year old. The presentation recommends maintaining unmown GSAs and continuing long-term research.
The document summarizes a study conducted by the Delta Farmland & Wildlife Trust on the effects of mowing grassland set-asides (GSAs) on wildlife. The study compared mown and unmown GSAs and assessed vegetation, small mammals like voles, and raptor behavior. Key findings included greater vegetation cover in unmown GSAs, low vole abundance possibly due to population cycles, and northern harriers showing a preference for hunting in unmown GSAs over mown ones. The researchers recommend maintaining unmown GSAs over one year old to benefit wildlife.
The document summarizes a study conducted by the Delta Farmland & Wildlife Trust on the effects of mowing grassland set-asides (GSA) on wildlife in agricultural areas in Delta, BC. The study compared mown and unmown GSA plots measuring vegetation cover, small mammal abundance, and northern harrier behavior over multiple years. Key findings included greater vegetation cover and preference by northern harriers for unmown older GSA. The recommendations are to maintain unmown GSA that are over one year old to benefit wildlife.
This document discusses strategies for eradicating invasive wetland plants at a large catchment scale. It focuses on the importance of partnership working between landowners, managers, and river champions to identify plant locations, build trust, coordinate removal efforts from upstream to downstream, and develop long-term relationships and sustained contact to successfully remove invasive plants over a large area on a long-term basis. The key is getting everyone involved to work together and maintain cooperation.
The document provides highlights from a metroparks organization in 2013, including recertification, restoration projects, awards, new divisions, exhibits, planning efforts, personnel changes, improvements to facilities, volunteer activities, and community events. New positions were created in areas like natural resources, land management, and planning. Over 3,000 volunteer hours and projects like prairie and trail restoration were completed. The organization was recognized with awards for its work and outreach.
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The document describes two main types of grasslands: tropical grasslands called savannas found in tropical regions with distinct rainy and dry seasons, featuring scattered trees and tall grasses; and temperate grasslands called steppes found in higher latitudes with seasonal rainfall and cold winters, where grasses lie dormant during dry periods and regrow after rain. Key adaptations of grasses in these grasslands include deep roots, small leaves, thick leaves, and swollen trunks or dormancy to conserve water through dry or cold conditions.
The document discusses grassland management strategies in northwest China and principles of agroecology. It argues that biological processes should be mobilized as much as possible rather than relying on mechanical, engineering or chemical solutions. Nurturing soil biota and plant roots is important to resist climate changes and maintain soil fertility. Community-based management depends on government support and local organization. Carrying capacity concepts need revising as rangelands can be more productive and sustainable with better intensive management that does not overexploit resources. Agroecology principles show that less intensive methods can sometimes achieve more if they work with biological potentials in soil and plants.
Grass and legumes increase the aggregation of soil particles, improvement soil structure and water holding capacity of the soil. Grasses give quicker protection to eroded lands.To established gully sides, water-ways, gully heads and check dams, grass is perhaps the most effective and economical tool. It can be put to various uses in soil conservation, viz; Strip cropping, rotational cropping or lay farming. Stabilization of bunds and terraces. Stabilization of gullies, diversion or drainage channels. Stabilization of sand dunes. Meadows and pastures on steep slops. Fertility builder for eroded soil.
The document summarizes a study conducted by the Delta Farmland & Wildlife Trust on the effects of mowing grassland set-asides (GSAs) on wildlife. The study compared mown and unmown GSAs and assessed vegetation, small mammals like voles, and raptor behavior. Key findings included greater vegetation cover in unmown GSAs, low vole abundance possibly due to population cycles, and northern harriers showing a preference for hunting in unmown GSAs over mown ones. The researchers recommend maintaining unmown GSAs over one year old to benefit wildlife.
The document summarizes a study conducted by the Delta Farmland & Wildlife Trust on the effects of mowing grassland set-asides (GSA) on wildlife in agricultural areas in Delta, BC. The study compared mown and unmown GSA plots measuring vegetation cover, small mammal abundance, and northern harrier behavior over multiple years. Key findings included greater vegetation cover and preference by northern harriers for unmown older GSA. The recommendations are to maintain unmown GSA that are over one year old to benefit wildlife.
This document discusses strategies for eradicating invasive wetland plants at a large catchment scale. It focuses on the importance of partnership working between landowners, managers, and river champions to identify plant locations, build trust, coordinate removal efforts from upstream to downstream, and develop long-term relationships and sustained contact to successfully remove invasive plants over a large area on a long-term basis. The key is getting everyone involved to work together and maintain cooperation.
The document provides highlights from a metroparks organization in 2013, including recertification, restoration projects, awards, new divisions, exhibits, planning efforts, personnel changes, improvements to facilities, volunteer activities, and community events. New positions were created in areas like natural resources, land management, and planning. Over 3,000 volunteer hours and projects like prairie and trail restoration were completed. The organization was recognized with awards for its work and outreach.
This presentation was given at the Peel Harvey Biosecurity Group's Fox Control Workshop held in Harvey. Presentation was given by Dr Peter Adams from the Department of Primary Resources and Regional Development.
The document describes two main types of grasslands: tropical grasslands called savannas found in tropical regions with distinct rainy and dry seasons, featuring scattered trees and tall grasses; and temperate grasslands called steppes found in higher latitudes with seasonal rainfall and cold winters, where grasses lie dormant during dry periods and regrow after rain. Key adaptations of grasses in these grasslands include deep roots, small leaves, thick leaves, and swollen trunks or dormancy to conserve water through dry or cold conditions.
The document discusses grassland management strategies in northwest China and principles of agroecology. It argues that biological processes should be mobilized as much as possible rather than relying on mechanical, engineering or chemical solutions. Nurturing soil biota and plant roots is important to resist climate changes and maintain soil fertility. Community-based management depends on government support and local organization. Carrying capacity concepts need revising as rangelands can be more productive and sustainable with better intensive management that does not overexploit resources. Agroecology principles show that less intensive methods can sometimes achieve more if they work with biological potentials in soil and plants.
Grass and legumes increase the aggregation of soil particles, improvement soil structure and water holding capacity of the soil. Grasses give quicker protection to eroded lands.To established gully sides, water-ways, gully heads and check dams, grass is perhaps the most effective and economical tool. It can be put to various uses in soil conservation, viz; Strip cropping, rotational cropping or lay farming. Stabilization of bunds and terraces. Stabilization of gullies, diversion or drainage channels. Stabilization of sand dunes. Meadows and pastures on steep slops. Fertility builder for eroded soil.
Brian Barrera is seeking a position relating to range and wildlife, agriculture, or fisheries and wetland management. He has a B.S. in Range and Wildlife Management from Texas A&M University-Kingsville and an Associate's Degree in Agricultural Science and Technology from Texas State Technical College. Brian has extensive experience as a boat captain, fishing and hunting guide, ranch hand, and research assistant studying red tide and its effects on wildlife. He has also volunteered with several conservation organizations.
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This study investigated the relationship between zooplankton community composition and natural and human factors in 25 small lakes in eastern New York. Zooplankton samples were collected from each lake and analyzed to identify taxa. Cluster analysis identified four distinct zooplankton community types characterized by different dominant taxa. Community composition varied based on lake size, conductivity, and percentage of impervious surface in the lake basin, indicating influence from both natural and anthropogenic drivers. The results provide insight into how zooplankton communities are structured in these lakes and how they relate to environmental conditions.
This document summarizes findings from citizen science data on secretarybird populations in South Africa. Analysis of data from the Southern African Bird Atlas Projects and Coordinated Avifaunal Roadcounts showed that secretarybird reporting rates have declined in most provinces, with the strongest declines in the Eastern Cape, Free State, and Northern Cape. The data also indicated that secretarybirds prefer natural habitats to transformed habitats, though they are still seen more often in transformed areas in the Western Cape due to habitat loss. Overall, the South African secretarybird population appears to be declining due to habitat loss and bush encroachment.
Ranavirus: an emerging pathogen in amphibian, fish and reptile populations in...mgray11
This document summarizes research on Ranavirus, an emerging pathogen affecting amphibians, fish, and reptiles. Ranavirus is a DNA virus that can cause rapid mortality in susceptible hosts. Research has shown that Ranavirus transmission is efficient across multiple host classes and that community composition and exposure order can impact outbreaks. Evidence also suggests that Ranavirus is capable of causing local extirpations of amphibian populations, including more common species. Factors such as anthropogenic stressors and global trade may contribute to the emergence of this pathogen. Ranavirus represents a significant threat to global biodiversity.
Brian Barrera is seeking a position relating to range and wildlife, agriculture, or fisheries and wetland management. He has a B.S. in Range and Wildlife Management from Texas A&M University-Kingsville and an Associate's Degree in Agricultural Science and Technology from Texas State Technical College. Brian has extensive experience as a boat captain, fishing and hunting guide, ranch hand, and research assistant studying red tide and its effects on wildlife. He has also volunteered with several conservation organizations.
Secretarybirds and Citizen Science in South AfricaSally Hofmeyr
A short slideshow describing how we used citizen science data to assess the status and ecology of Secretarybirds (Sagittarius serpentarius) in South Africa.
Biology And Conservation Of The California Tiger Salamander Revised 2009debmontana
The document summarizes a workshop on the biology and conservation of the California tiger salamander. It provides details on the salamander's life cycle, habitat requirements, threats, and strategies for conservation. It also describes activities at the workshop including a field trip, aquatic sampling techniques, and an introduction to monitoring methods. The document highlights the overlap between the salamander's range and PG&E's service territory and facilities.
This study investigated the relationship between zooplankton community composition and natural and human factors in 25 small lakes in eastern New York. Zooplankton samples were collected from each lake and analyzed to identify taxa. Cluster analysis identified four distinct zooplankton community types characterized by different dominant taxa. Community composition varied based on lake size, conductivity, and percentage of impervious surface in the lake basin, indicating influence from both natural and anthropogenic drivers. The results provide insight into how zooplankton communities are structured in these lakes and how they relate to environmental conditions.
This document summarizes findings from citizen science data on secretarybird populations in South Africa. Analysis of data from the Southern African Bird Atlas Projects and Coordinated Avifaunal Roadcounts showed that secretarybird reporting rates have declined in most provinces, with the strongest declines in the Eastern Cape, Free State, and Northern Cape. The data also indicated that secretarybirds prefer natural habitats to transformed habitats, though they are still seen more often in transformed areas in the Western Cape due to habitat loss. Overall, the South African secretarybird population appears to be declining due to habitat loss and bush encroachment.
Ranavirus: an emerging pathogen in amphibian, fish and reptile populations in...mgray11
This document summarizes research on Ranavirus, an emerging pathogen affecting amphibians, fish, and reptiles. Ranavirus is a DNA virus that can cause rapid mortality in susceptible hosts. Research has shown that Ranavirus transmission is efficient across multiple host classes and that community composition and exposure order can impact outbreaks. Evidence also suggests that Ranavirus is capable of causing local extirpations of amphibian populations, including more common species. Factors such as anthropogenic stressors and global trade may contribute to the emergence of this pathogen. Ranavirus represents a significant threat to global biodiversity.
Ranavirus: an emerging pathogen in amphibian, fish and reptile populations in...
WorkDFWT Full screen PRESENTATION
1. GRASSLAND SET-ASIDE
Delta Farmland & Wildlife Trust
By Shawana Michalek, Sammy Penner and Maggie Stewart Student
Researchers, British Columbia Institute of Technology
The effects of mowing a newly established GLSA on raptor bevaiour during winter
25. Northern Harrier
Mark re-capture
Northern Harrier hunting preference
n = 16
2014 - 152013 - 142012 - 132011 - 12
Four years old Three years old Two years old < 1 year old
100
90
80
70
60
50
40
30
20
10
0
Year of Study
(Grassland Set-aside Age)
Delta Farmland & Wildlife Trust
30. A special thanks to…
Delta Farmland & Wildlife Trust:
Christine Terpsma, Program Coordinator
Mary Taitt, Chair
Trevor Harris, property owner
British Columbia Institute of Technology
Eric Anderson, Project Supervisor
BCIT Instructors:
Danny Catt
Tom Saare
Kelly Hatfull
Doug Ransome
Volunteers: Neusa Amboni, Dan Garney, Mary Tang, Krystal
Brennan and Sean Chathom
Delta Farmland & Wildlife Trust
38. Translating Raw Data
Mown Habitat Unmown Habitat
Species Sex Start End Time 0:00 0:10 0:20 0:00 0:10 0:20
NOHA F 11:48 11:48 FH FL FH
39. Percent Time per observation
Mown Habitat Unmown Habitat
Species Sex Start End Time 0:00 0:10 0:20 0:00 0:10 0:20 Time
Interval
NOHA F 11:48 11:48 FH FL FH 3
NOHA M 12:53 12:53 FL FL 2
% of time
Mown Habitat Unmown Habitat
FH FL FH FL
=COUNTIF(range,
"FH")/number of time
intervals
= 1/3 = 34%
=1/3 =
34%
=1/3 = 34% =0/3 = 0%
=COUNTIF(range,
"FH")/number of time
intervals
= 0/2 = 0%
=0/2 = 0% =0/2 = 0% =2/2 = 100%
41. Percent Time per species
Mown Habitat Unmown Habitat
Species Mean % time (FL) Mean % time (FH) Mean % time (FL) Mean % time (FH)
NOHA =sum%timeFL/
#NOHAobserved
=(34% + 0%)/2
= 17%
=(34% + 0%)/2
= 17%
=(34% + 0%)/2
= 17%
= (100% + 0%)/2
= 50%
% of time
Mown Habitat Unmown Habitat
FH FL FH FL
34% 34% 34% 0%
0% 0% 0% 100%
Editor's Notes
Agriculture is a necessity and Delta BC has some of the most fertile soil in ALL of Canada, not only does this contribute significantly to our provincial GDP – this valuable resource feeds our growing population however the Delta is also very important environmentally
The increasing human demand encroaching on wildlife habitat – is causing loss and degradation of critical niches which negatively impacts the environment by weakening the ecosystem
The Lower Fraser Delta is an estuary which supports a diverse assemblage of wildlife – our study site is also located within this Important Bird Area (Boundary Bay–Roberts Bank–Sturgeon Bank Important Bird Area )
Reifel Migratory Bird Sanctuary, DU, The Nature Trust – Agricultural Land Reserve (focus on food production)
This conflict of interest has stirred debate for decades – but DF&WT found a resolution and is a leader is uniting farming with wildlife conservation – through six programs aimed at enhancing farming viability while providing wildlife conservation
Today we will focus on the DF&WT GLSA program – which offers long-term land management – by providing farmers cost sharing benefits – newly established GLSA are specially seeded and fields are allowed to be fallowed for four years – This increases habitat and the vegetative diversity promotes biodiversity
So, lets look into how to best manage these GLSA
With 200ha of GLSA – DF&WT wanted to make sure they were making the most of their resources –it is important to know how best to manage the GLSA – How does the establishment of a new GLSA impact wildlife? What are the impacts of mowing? Our research project looked into these factors by comparing mown vs. unmown GLSA on vegetation, small mammals and raptor behaviour
Within this newly established GLSA we have six quadrants – each are 82m x 82m – 3 are mown while 3 are left unmown - at t
Sampled from Oct to March (x4)
5 cover classes (0-1% = 1; 75-100% = 5)
Mark re-capture – recorded tag and location (mown vs unmown) collected biological data including weight and sex – However, our trapping permit did not arrive until mid Februrary, compared to early October in previous years
THIS ANIMATION NEEDS HELP!! Please… the pic underneath is too quick…
I don’t like the order of these……. Its makes more sense to talk about Oct Clover first (it should be to the first on the left)
It’s a little easier to see with photographs… but you maybe wondering, why this is important……. Look at the difference between our newly established GLSA in March, how look at a four-year old GLSA taken only days apart – This goes to show how time influence vegetative structure – a critical factor on small mammal abundance MAKE IMAGES BIGGER
Our low abundance has similar finding by other researches trapping during the same study period also in Delta – where after leaving traps out over three days only caught three TV – very low!! - Although there was clear evidence of use (this little fellow indicates that! Our trapping effort was limited by time)
Although NOHA exhibited a preference to unmown habitat (a re-occurring pattern and well referenced in other literature as well) What was unique to our study was the decline in NOHA observations from all previous years. GET SAMPLE AMOUNTS FROM PREVIOUS PAPERS
Low Cyclic Abundance - Occurs 3-5 years - Emphasised by GLSA - Coincides with Northern Harrier low abundance
Mention 200ha of GLSA – SET Backgroud with GLSA pic from report
Due to increasing demand for agri production in the area, orgs like DFWT are true leaders – by sampling for veg composition change, vole abundance and raptor behavior preference – we are building onto a multiple year data set which can be used by the Trust to make long-term management decisions -
Today’s environment faces increasing demands which increases with the growing population – The Lower Mainland is no exception, our city centers and urbanization are expanding – and with it increased development of neighboring lands
Is it strange that our observations start from Oct 29? Doesn’t that seem late?