Wildlife - habitat Term: Habitat Fragmentation
- Habitats which were once continuous become divided into separate fragments.
- The separate fragments tend to be very small islands isolated from each other by crop land, pasture, pavement, or even barren land.
- Major habitat problem for wildlife in Fauquier County
- No immigration or emigration
- Reduced reproductive pool
- Decreasing species diversity
- Increased edge to core ratio
- At the forest edge, wind and sun light result in dryer conditions than are found in the interior of the forest patch.
- Forest edges are also more accessible to predators and parasites that may occur in adjacent fields or developed areas
- Interior Species can only live in the core of a forest
- Provide a covered route between fragmented habitats
Riparian Buffers improve habitat by:
- Functioning as wildlife corridors
- Provides cover for animals to move from one area to another.
Provide cover & edge habitat
Edge No edge
- Provides food, cover, & nesting sites
- Trees & shrubs provide roosting sites for birds
- Increased humidity provides habitat for amphibians, snakes, & turtles
- Supplies cover and cool temperatures for fish and aquatic insects
Habitat Requirements of Wildlife
- Not just during hunting season
Space or Range
- Deer will live in a very small range
- Bears ranges getting smaller
Niche & Habitat
- Biological & physical resources
- Physiological & behavioral adaptations
Habitat & Niche work together
- Female ducks need to supply all fat, minerals & protein needed in egg w/in 24 hours
- Ducks usually eat seeds – lower protein, higher fat
- During laying ducks eat invertebrates – high protein
- Ducks seek shallow wetlands because they warm quickly in the spring & provide abundant invertebrates
- Select and describe an ecosystem from the guide
- Describe the management activities needed to create or improve its wildlife habitat
- Include a section on management of invasives
- Supplement with management strategies for one other (non-avian) wildlife species.
- Make a powerpoint to display your results.
- Have a spokesperson present your management strategies to the class on Wed.
- No more than 2 people per group
- Feed fish at 3% of body weight
- Table 4-2 in book, relates length to weight
- We have 200, how much do they weigh?