A Little Bug with a Big Bite: Impact of Hemlock Woolly Adelgid
... In contrast, no changes of ground-level arthropod diversity were observed between the two stands, indicating species in the studied habitats are either less reliant on specific plant species, or that they exhibit a delayed response to changes in vegetation structure. 5. Potential HWA Control and Man ...
... In contrast, no changes of ground-level arthropod diversity were observed between the two stands, indicating species in the studied habitats are either less reliant on specific plant species, or that they exhibit a delayed response to changes in vegetation structure. 5. Potential HWA Control and Man ...
The Wonderful World Boreal Woodland Caribou
... in wetlands. These areas provide opportunities for escape if danger threatens. Caribou are excellent swimmers, and will quickly jump into the water and swim to escape from predators. A female may return to the same calving site year after year. The calves are born mid May to early July. Once the cal ...
... in wetlands. These areas provide opportunities for escape if danger threatens. Caribou are excellent swimmers, and will quickly jump into the water and swim to escape from predators. A female may return to the same calving site year after year. The calves are born mid May to early July. Once the cal ...
Wildlife in Managed Forests: Deer and Elk
... to the ocean, and from Puget Sound in Washington southward to the Umpqua River Basin in southern Oregon, especially in association with major river valleys (USFWS 1983). When the Columbian whitetailed deer was first listed as an endangered species in 1968, the number of deer remaining was estimated ...
... to the ocean, and from Puget Sound in Washington southward to the Umpqua River Basin in southern Oregon, especially in association with major river valleys (USFWS 1983). When the Columbian whitetailed deer was first listed as an endangered species in 1968, the number of deer remaining was estimated ...
Northern Goshawk Status Review
... even though they do not manage forestlands. This affected the response to the requests by lowering the overall response rate, since managers who do not have forestlands often did not respond at all. Conversely, the request is known to ‘under report’ private land management since the request to priva ...
... even though they do not manage forestlands. This affected the response to the requests by lowering the overall response rate, since managers who do not have forestlands often did not respond at all. Conversely, the request is known to ‘under report’ private land management since the request to priva ...
TB970 Forest Herbicide Effects on Pacific Northwest
... The use of silvicultural herbicides to control competing vegetation has evolved over the past 75 years and has become an integral component of today’s forestry management practices. Although the direct effects of herbicides on non-target biota are generally well understood and documented, comparativ ...
... The use of silvicultural herbicides to control competing vegetation has evolved over the past 75 years and has become an integral component of today’s forestry management practices. Although the direct effects of herbicides on non-target biota are generally well understood and documented, comparativ ...
environmental science i
... surface, wind velocity, plant and animal species, among others. Along edges, there may be profound influences of one habitat upon the other often in rather complex ways. Temperatures, for example, might be expected to be higher in forested areas that are along an edge as compared to interior foreste ...
... surface, wind velocity, plant and animal species, among others. Along edges, there may be profound influences of one habitat upon the other often in rather complex ways. Temperatures, for example, might be expected to be higher in forested areas that are along an edge as compared to interior foreste ...
Principle short-term findings of thenational Fire and Fire Surrogate Study (FFS).
... The FFS study was conducted in seasonally dry forests administered by the U.S. Department of Agriculture (USDA) Forest Service, National Park Service, state parks, universities, and private industry at 12 sites across the United States, five in the East, and seven in the Western interior (fig. 1). A ...
... The FFS study was conducted in seasonally dry forests administered by the U.S. Department of Agriculture (USDA) Forest Service, National Park Service, state parks, universities, and private industry at 12 sites across the United States, five in the East, and seven in the Western interior (fig. 1). A ...
African buffaloSyncerus caffer(Sparrman, 1779)
... Taxonomists initially thought that each buffalo form represented a distinct species. Brooke (1873, 1875), who established the first classification of the African buffalo, reduced the number to three. Later, Blancou (1935) described up to 12 subspecies of buffalo. Haltenorth (1963), Ansell (1972) and ...
... Taxonomists initially thought that each buffalo form represented a distinct species. Brooke (1873, 1875), who established the first classification of the African buffalo, reduced the number to three. Later, Blancou (1935) described up to 12 subspecies of buffalo. Haltenorth (1963), Ansell (1972) and ...
VEGETATION TYPES AND FOREST PRODUCTIVITY, WEST PART
... listed in descending order of species significance ratings. Thus, a user of Appendix I can identify the most characteristic species of a given vegetation type by scanning the first few species listed for each of the five layers. ...
... listed in descending order of species significance ratings. Thus, a user of Appendix I can identify the most characteristic species of a given vegetation type by scanning the first few species listed for each of the five layers. ...
Mangrove Ecosystems of Latin America and the Caribbean: a
... million ha or 18.7% of the total (Table 2). Recent estimates of world mangrove cover vary and range from 15 to 30 million ha, with an average of 21.8 million ha (Saenger el al., 1983; Lugo el al., 1990; Twilley el al., 1992) . Latin American and Ca ribbean mangroves represent approximately 18% of t ...
... million ha or 18.7% of the total (Table 2). Recent estimates of world mangrove cover vary and range from 15 to 30 million ha, with an average of 21.8 million ha (Saenger el al., 1983; Lugo el al., 1990; Twilley el al., 1992) . Latin American and Ca ribbean mangroves represent approximately 18% of t ...
Zoe Muller - Rothschild`s Giraffe Project
... poaching has reached a fifteen-year high. However, despite numerous anecdotal reports of poaching in giraffe there is very limited data or research on this issue and we cannot be sure of the real extent to which poaching is a threat for giraffe populations. A review of the literature highlights that ...
... poaching has reached a fifteen-year high. However, despite numerous anecdotal reports of poaching in giraffe there is very limited data or research on this issue and we cannot be sure of the real extent to which poaching is a threat for giraffe populations. A review of the literature highlights that ...
Habitat associations of the long-nosed potoroo (Potorous tridactylus
... were trapped in a wide range of macrohabitats, they displayed some preference for greater canopy and shrub cover, and ground cover with lower floristic diversity. While most individuals also displayed preferences for various microhabitat attributes, no clear trends were evident across all individuals ...
... were trapped in a wide range of macrohabitats, they displayed some preference for greater canopy and shrub cover, and ground cover with lower floristic diversity. While most individuals also displayed preferences for various microhabitat attributes, no clear trends were evident across all individuals ...
Natural enemies and environmental factors affecting the population
... Lymantriidae) may reach outbreak levels that pose considerable economic and environmental impacts to forests in Europe, Asia, Africa and North America. Compared with the situation in its native European range feeding damage by gypsy moth is often found to be more severe in North America and other pa ...
... Lymantriidae) may reach outbreak levels that pose considerable economic and environmental impacts to forests in Europe, Asia, Africa and North America. Compared with the situation in its native European range feeding damage by gypsy moth is often found to be more severe in North America and other pa ...
Kelp Forest Ecosystems - Digital Commons @ UMaine
... North American case studies of kelp forests were examined to determine their long history with humans and project the status of future kelp forests to the year 2025. Fishing impacts on kelp forest systems have been both profound and much longer in duration than previously thought. Archaeological dat ...
... North American case studies of kelp forests were examined to determine their long history with humans and project the status of future kelp forests to the year 2025. Fishing impacts on kelp forest systems have been both profound and much longer in duration than previously thought. Archaeological dat ...
Kelp forest ecosystems - Cambridge University Press
... North American case studies of kelp forests were examined to determine their long history with humans and project the status of future kelp forests to the year 2025. Fishing impacts on kelp forest systems have been both profound and much longer in duration than previously thought. Archaeological dat ...
... North American case studies of kelp forests were examined to determine their long history with humans and project the status of future kelp forests to the year 2025. Fishing impacts on kelp forest systems have been both profound and much longer in duration than previously thought. Archaeological dat ...
Rainforest Regrowth Benefits
... and ‘softwood scrubs’ that may occur in fire-protected situations where the average annual rainfall is as low as 600 mm per annum. ...
... and ‘softwood scrubs’ that may occur in fire-protected situations where the average annual rainfall is as low as 600 mm per annum. ...
The Ecology and Silviculture of Bigleaf Maple
... Fraser and Sunshine Coast Timber Supply Areas (Figure ). The estimated potential annual harvest of bigleaf maple is m3, compared to m3 for red alder, and m3 for cottonwood. However, present inventory data probably underestimate bigleaf maple’s prominence in coastal forests, an ...
... Fraser and Sunshine Coast Timber Supply Areas (Figure ). The estimated potential annual harvest of bigleaf maple is m3, compared to m3 for red alder, and m3 for cottonwood. However, present inventory data probably underestimate bigleaf maple’s prominence in coastal forests, an ...
factsheet snowshoe hare en
... the hares between feeding and resting places, are well-travelled, both by the hares and by other species, like squirrels, porcupines, and skunks. Major runways follow the same routes in summer and in winter, and the snowshoe hares keep the trails well-maintained, quickly clipping off stems and leave ...
... the hares between feeding and resting places, are well-travelled, both by the hares and by other species, like squirrels, porcupines, and skunks. Major runways follow the same routes in summer and in winter, and the snowshoe hares keep the trails well-maintained, quickly clipping off stems and leave ...
Gucinski, H., M.J. Furniss, R.R. Ziemer, M.H. Brookes
... stream networks, their stability in and response to storms, and their effects on wildfire, wildlife, and vegetation. Distinguishing among the effects of building, maintaining, using, decommissioning, or abandoning roads is crucial because each of these actions affects the environment in many ways. K ...
... stream networks, their stability in and response to storms, and their effects on wildfire, wildlife, and vegetation. Distinguishing among the effects of building, maintaining, using, decommissioning, or abandoning roads is crucial because each of these actions affects the environment in many ways. K ...
1 - Symmetree Consulting
... The Kamloops Future Forest Strategy (KFFS) has information and discussion that may be of interest for a number of audiences, from policy makers to practitioners. Thus a brief description of the report structure is provided: The KFFS is made up of three major parts: 1. The Report: This document provi ...
... The Kamloops Future Forest Strategy (KFFS) has information and discussion that may be of interest for a number of audiences, from policy makers to practitioners. Thus a brief description of the report structure is provided: The KFFS is made up of three major parts: 1. The Report: This document provi ...
Lesson Overview
... Sometimes, existing communities are not completely destroyed by disturbances. In these situations, secondary succession occurs. Secondary succession proceeds faster than primary succession, in part because soil survives the disturbance. As a result, new and surviving vegetation can regrow rapidly. ...
... Sometimes, existing communities are not completely destroyed by disturbances. In these situations, secondary succession occurs. Secondary succession proceeds faster than primary succession, in part because soil survives the disturbance. As a result, new and surviving vegetation can regrow rapidly. ...
Conservation Assessment for the Northern
... topography and coastal fjords. The Alexander Archipelago consists of over 22,000 islands ranging from less than 0.01 acre to over 1,750,686 acres (Prince of Wales Island) with over 11,000 miles of shoreline (fig.1). Together these attributes represent features of large-scale landscape heterogeneity. ...
... topography and coastal fjords. The Alexander Archipelago consists of over 22,000 islands ranging from less than 0.01 acre to over 1,750,686 acres (Prince of Wales Island) with over 11,000 miles of shoreline (fig.1). Together these attributes represent features of large-scale landscape heterogeneity. ...
stewardship of longleaf pine forests
... cologists have classified coastal plain longleaf forests into four major series along a moisture gradient from dry to wet: xeric, subxeric, mesic, and seasonally wet. These series are further subdivided into twenty-three longleaf communities based on geography and topographic position. Many of these ...
... cologists have classified coastal plain longleaf forests into four major series along a moisture gradient from dry to wet: xeric, subxeric, mesic, and seasonally wet. These series are further subdivided into twenty-three longleaf communities based on geography and topographic position. Many of these ...
Moths and Mountains: Diversity, Altitude and Latitude
... altitudinal transects with superimposed vectors. Only the significant variables were incorporated into this visual summary of variables that correlate with the observed moth assemblage pattern. The direction of each vector line indicates the positive or negative direction of the trend, and the lengt ...
... altitudinal transects with superimposed vectors. Only the significant variables were incorporated into this visual summary of variables that correlate with the observed moth assemblage pattern. The direction of each vector line indicates the positive or negative direction of the trend, and the lengt ...