Resources by James A. Parkhurst
|Managing Wildlife Damage: Snakes||Aug 26, 2010||420-021|
|Guide to Threatened and Endangered Species on Private Lands In Virginia||Sep 6, 2018||420-039|
|Learning to Live with Coyotes in Metropolitan Areas||May 1, 2009||420-050|
|Managing Wildlife Damage: Black Bears (Ursus americanus)||
The black bear is a large mammal with powerful limbs, a relatively small head, small ears, and black fur, although several less common color phases (e.g., cinnamon) can occur in this species.
|May 1, 2009||420-200|
|Managing Wildlife Damage: Moles||May 1, 2009||420-201|
|Managing Wildlife Damage: Beavers (Castor canadensis)||
The beaver is North America’s largest rodent. Adult beavers normally weigh 40 to 50 pounds, but exceptionally large animals may weigh up to 80 pounds. They range in length from 35 to 50 inches, including the tail, which normally is about 10 inches long.
|May 1, 2009||420-202|
|Managing Wildlife Damage: Canada Goose (Branta canadensis)||
To most people, a Canada goose is a Canada goose. However, taxonomists recognize up to 11 subspecies (i.e., Giant, Lesser, Western, Atlantic, Interior, Richardson’s, Dusky, Vancouver, Taverner’s, Aleutian and Cackling Goose) that reside within the United States and Canada. Here in the mid-Atlantic region, the Giant Canada goose is most common.
|May 1, 2009||420-203|
|The Control of Burrowing Crayfish in Ponds||
At times landowners may be confronted with serious water losses resulting from the sudden collapse or gradual deterioration of earthen pond dams, irrigation canals, and drainage ditches. Although the loss of water from small earthen impoundments is frequently due to faulty construction, it may also be the result of undetected biological forces.
|May 1, 2009||420-253|
|Liming Acidified Lakes and Ponds||
“Liming,” as the word suggests, is the addition of limestone (calcite), primarily calcium carbonate (CaCO3), to neutralize acid waters and soils and buffer them from rapid fluctuations in pH. Limestone typically is applied to lawns, gardens, pastures, and croplands to supply calcium, an essential plant nutrient, and to decrease soil acidity.
|May 1, 2009||420-254|
|Sustaining America's Aquatic Biodiversity - What Is Aquatic Biodiversity; Why Is it Important?||
Aquatic biodiversity is the rich and wonderful variety of plants and animals—from crayfish to catfish, from mussels to mayflies, from tadpoles to trout—that live in watery habitats. It is the number of different native species, or species richness.
|May 1, 2009||420-520|
|Sustaining America's Aquatic Biodiversity - Why Is Aquatic Biodiversity Declining?||
When a species goes extinct, all the genetic information carried by individuals of that species is lost forever, never to be reproduced again. Extinction is a terrible waste of life and a loss of potential solutions to future problems such as possible cures to disease and solutions for survival in a changing world.
|May 1, 2009||420-521|
|Sustaining America's Aquatic Biodiversity - Aquatic Habitats: Homes for Aquatic Animals||
Natural aquatic habitats include ponds, lakes, rivers, streams, springs, estuaries, bays, and various types of wetlands. Some of these habitats are shallow and others deep, some are coldwater and others warm-water, some are freshwater and others saltwater, and some have high oxygen levels and others little oxygen.
|May 1, 2009||420-522|
|Managing Spring Wetlands For Fish and Wildlife Habitat||
Natural springs are important aquatic resources. They are a reliable source of clean, high-quality groundwater that flows at a relatively constant rate and temperature.
|May 1, 2009||420-537|
|Guide to Understanding and Managing Lakes: Part I (Physical Measurements)||
Inland lakes constitute one of our greatest natural resources. They are immensely popular features, particularly as recreational community developments.
|May 1, 2009||420-538|
|Deer: A Garden Pest||Sep 5, 2013||HORT-62NP|