A Basis for Relative Growth Rate Differences Between Native and
... documented. However, the mechanisms allowing invasives to achieve higher RGR are poorly understood. The objective of this study was to determine the basis for RGR differences between native and invasive forbs that have widely invaded nutrient-poor soils of the Intermountain West. Six native and 6 in ...
... documented. However, the mechanisms allowing invasives to achieve higher RGR are poorly understood. The objective of this study was to determine the basis for RGR differences between native and invasive forbs that have widely invaded nutrient-poor soils of the Intermountain West. Six native and 6 in ...
BIODIVERSITY-ECOSYSTEM FUNCTION RESEARCH
... and Invasions at Different Scales BDEF studies of the last decade almost universally invoke the global decline in biodiversity as the primary impetus for research (Naeem et al. 1999). Conservation management and measurement of ecosystem functions (e.g., carbon credits) also occur on relatively large ...
... and Invasions at Different Scales BDEF studies of the last decade almost universally invoke the global decline in biodiversity as the primary impetus for research (Naeem et al. 1999). Conservation management and measurement of ecosystem functions (e.g., carbon credits) also occur on relatively large ...
Ecological Balances, Activity Based Foundation Course on
... Mr. D.K. Malegamwala allowed the Centre both intellectual and economic freedom to select students and to experiment with innovative content and mode of interaction. After him, the project has received continued support from his successor, Dr. Suma Chitnis, Director of the J. N. Tata Endowment Trust. ...
... Mr. D.K. Malegamwala allowed the Centre both intellectual and economic freedom to select students and to experiment with innovative content and mode of interaction. After him, the project has received continued support from his successor, Dr. Suma Chitnis, Director of the J. N. Tata Endowment Trust. ...
This is an electronic reprint of the original article. This reprint may
... the fish—should either increase or decrease in abundance due to environmental changes, this would impinge on the transmission of the parasite and consequently on its abundance in the hosts. The simplest way in which invasive predatory species can affect parasites is by consuming the parasite’s host. ...
... the fish—should either increase or decrease in abundance due to environmental changes, this would impinge on the transmission of the parasite and consequently on its abundance in the hosts. The simplest way in which invasive predatory species can affect parasites is by consuming the parasite’s host. ...
Determinants of the detrital arthropod community structure: the
... resources are accessible (Sanders et al. 2007, Stringer et al. 2007). Small-scale variation in temperature within a single site can also drive spatial variation in rates of activity and in the composition and abundance of a variety of arthropod groups (Niemela et al. 1996, Cerdá et al. 1998). For ex ...
... resources are accessible (Sanders et al. 2007, Stringer et al. 2007). Small-scale variation in temperature within a single site can also drive spatial variation in rates of activity and in the composition and abundance of a variety of arthropod groups (Niemela et al. 1996, Cerdá et al. 1998). For ex ...
Alternative causes of edge-abundance relationships in birds and
... urban-wildland edges can be caused by different factors. Edges can affect populations directly if animals respond behaviorally to the edge itself or if proximity to edge directly affects demographic vital rates (an ‘‘ecotonal’’ effect). Alternatively, urban edges can indirectly affect populations if ...
... urban-wildland edges can be caused by different factors. Edges can affect populations directly if animals respond behaviorally to the edge itself or if proximity to edge directly affects demographic vital rates (an ‘‘ecotonal’’ effect). Alternatively, urban edges can indirectly affect populations if ...
Influence of Mammalian Herbivory on Woody Plants Dynamics and
... Table 5-4. Functional traits diversity (Rao coefficient index) and species diversity (Simpson & Shannon index) for PR and GR ............................................................................................................. 82 Table 5-5 Functional trait Diversity (FD) values between PR an ...
... Table 5-4. Functional traits diversity (Rao coefficient index) and species diversity (Simpson & Shannon index) for PR and GR ............................................................................................................. 82 Table 5-5 Functional trait Diversity (FD) values between PR an ...
The role of interspecific interference competition
... in shifts in traits that affect resource use. This definition does not encompass all phenomena that have at one time or another been referred to as ECD, but it is true to the original use of the term (see Section XI) and consistent with all existing theoretical models of ECD. ECD has been modeled in ...
... in shifts in traits that affect resource use. This definition does not encompass all phenomena that have at one time or another been referred to as ECD, but it is true to the original use of the term (see Section XI) and consistent with all existing theoretical models of ECD. ECD has been modeled in ...
Wetlands and reedbeds - Freshwater Habitats Trust
... 3. Case studies: Opportunities for pond creation in wetlands and ...
... 3. Case studies: Opportunities for pond creation in wetlands and ...
Chlamyphorus retusus - University of Wisconsin
... and powerful hind feet to move the earth that the forefeet loosened. As it enters the burrow, it may use its carapace to close the opening. They usually borrow near anthills. When startled, Chlamyphorus retusus lays flat on the ground or cries similar to human infants (Nowak 1999). It also has five ...
... and powerful hind feet to move the earth that the forefeet loosened. As it enters the burrow, it may use its carapace to close the opening. They usually borrow near anthills. When startled, Chlamyphorus retusus lays flat on the ground or cries similar to human infants (Nowak 1999). It also has five ...
Species interactions on the biome transition zone in
... warm surface waters move into the central and eastern tropical Pacific ocean and cause more frequent storms passing from the Pacific to the U.S. south-west during the fall and winter (Cayan & Webb, 1992). La Niña episodes result when unusually warm tropical surface waters are restricted to areas we ...
... warm surface waters move into the central and eastern tropical Pacific ocean and cause more frequent storms passing from the Pacific to the U.S. south-west during the fall and winter (Cayan & Webb, 1992). La Niña episodes result when unusually warm tropical surface waters are restricted to areas we ...
LIFE and European Mammals - European Commission
... was once common all across Spain and Portugal. However, over recent centuries, and particularly in the last decades of the 20th century, its population and distribution dropped dramatically. In 2009, it was estimated that only 250 lynxes survived (plus 74 in captive-breeding centres) in the wild sou ...
... was once common all across Spain and Portugal. However, over recent centuries, and particularly in the last decades of the 20th century, its population and distribution dropped dramatically. In 2009, it was estimated that only 250 lynxes survived (plus 74 in captive-breeding centres) in the wild sou ...
Notes on the Foraging Strategies of the Giant Robber Crab Birgus latro
... Terrestrial crustaceans often have limited access to minerals such as sodium, magnesium, calcium, or potassium, compared to marine environments where dissolved minerals are available almost ad libitum. Thus, terrestrial crustaceans must access their mineral demands either through food or salt water ...
... Terrestrial crustaceans often have limited access to minerals such as sodium, magnesium, calcium, or potassium, compared to marine environments where dissolved minerals are available almost ad libitum. Thus, terrestrial crustaceans must access their mineral demands either through food or salt water ...
Paiute Plan - Living Assessment
... threaten them have been both a scourge and a savior. By 1924, the PCT in their native reach (below Llewellyn Falls) were already introgressed with LCT, rainbow trout, and golden trout. In 1949, another unauthorized transfer introduced rainbow trout above the falls. If it had not been for the 1946 st ...
... threaten them have been both a scourge and a savior. By 1924, the PCT in their native reach (below Llewellyn Falls) were already introgressed with LCT, rainbow trout, and golden trout. In 1949, another unauthorized transfer introduced rainbow trout above the falls. If it had not been for the 1946 st ...
Téléchargement
... Studies at SAS on size at age for the species from the Falkland Islands fishery are being carried out and techniques for preparation and reading of statolith growth increments are being refined. At SAS, cephalopod growth is also being studied using an index calculated from the ratio in the tissues o ...
... Studies at SAS on size at age for the species from the Falkland Islands fishery are being carried out and techniques for preparation and reading of statolith growth increments are being refined. At SAS, cephalopod growth is also being studied using an index calculated from the ratio in the tissues o ...
- New Zealand Ecological Society
... Bradfield 2005; Moreno 2009). However, accurate estimates of Hochstetter’s frog density are exceedingly difficult to obtain, making it hard to estimate the impact pigs may have on this species, either through predation or habitat modification. Feral pigs have often been implicated in the decline of ...
... Bradfield 2005; Moreno 2009). However, accurate estimates of Hochstetter’s frog density are exceedingly difficult to obtain, making it hard to estimate the impact pigs may have on this species, either through predation or habitat modification. Feral pigs have often been implicated in the decline of ...
Handout A - National Science Teachers Association
... Look around your house, school, and Is your favorite animal endanfavorite stores and restaurants. You gered? The U.S. Fish and Wildlife might find an item made from an Service maintains the Threatened animal protected by law. Most peo- and Endangered Species database ple never realize they have boug ...
... Look around your house, school, and Is your favorite animal endanfavorite stores and restaurants. You gered? The U.S. Fish and Wildlife might find an item made from an Service maintains the Threatened animal protected by law. Most peo- and Endangered Species database ple never realize they have boug ...
Simulation of potential habitat overlap between red deer (Cervus
... (Bonnot et al., 2013; Couturier et al., 2014; Jorge et al., 2013; Menard et al., 2014). Many traditional conservation measures target endemic or threatened species, such as the Siberian tiger (Panthera tigris altaica) and giant panda (Ailuropoda melanoleuca), which coexist in similar habitats with s ...
... (Bonnot et al., 2013; Couturier et al., 2014; Jorge et al., 2013; Menard et al., 2014). Many traditional conservation measures target endemic or threatened species, such as the Siberian tiger (Panthera tigris altaica) and giant panda (Ailuropoda melanoleuca), which coexist in similar habitats with s ...
Petition to list the Giant Palouse Earthworm
... Mr. Doane writes me that this species is very abundant in that region of country and that their burrows are sometimes seen extending to a depth of over fifteen feet, in cuts for new roads. I am also informed that much larger specimens than those sent me, are often found. (Smith 1897, p. 203) Additio ...
... Mr. Doane writes me that this species is very abundant in that region of country and that their burrows are sometimes seen extending to a depth of over fifteen feet, in cuts for new roads. I am also informed that much larger specimens than those sent me, are often found. (Smith 1897, p. 203) Additio ...
Invasive Species: A Biodiversity Challenge!
... components of a system and understand the interrelationships within the system; • Determining major threats to biodiversity, including the role of humans in introducing invasive species; • Participating in environmental stewardship as it relates to invasive species; and • Exploring ways to involv ...
... components of a system and understand the interrelationships within the system; • Determining major threats to biodiversity, including the role of humans in introducing invasive species; • Participating in environmental stewardship as it relates to invasive species; and • Exploring ways to involv ...
Live animal capture and handling guidelines for wild mammals
... ethical reasons. Animals that are traumatized from the actions of researchers are less likely to exhibit normal behavioural, physiological and ecological responses than untraumatized animals. In addition, they are less likely to survive due to an increased susceptibility to predation and subsequent ...
... ethical reasons. Animals that are traumatized from the actions of researchers are less likely to exhibit normal behavioural, physiological and ecological responses than untraumatized animals. In addition, they are less likely to survive due to an increased susceptibility to predation and subsequent ...
Physical factors affecting the relative abundance
... Ontario and Montreal (Quebec) found that E. ischnus and G. fasciatus respond differently to substrate characteristics, water chemistry variables, and current velocity. Both species increase in abundance in the presence of dreissenid mussels. However, E. ischnus density is positively correlated with ...
... Ontario and Montreal (Quebec) found that E. ischnus and G. fasciatus respond differently to substrate characteristics, water chemistry variables, and current velocity. Both species increase in abundance in the presence of dreissenid mussels. However, E. ischnus density is positively correlated with ...
Wolf Reintroduction in Idaho and Yellowstone National
... with intricate pack hierarchies. As native top predators, they can have trophic impacts through their interactions with other species. ...
... with intricate pack hierarchies. As native top predators, they can have trophic impacts through their interactions with other species. ...
how do different measures of functional diversity perform?
... candidate traits was used to calculate a candidate measure of FAD and FD of each experimental plot in the analysis. (C) The amount of variance in ecosystem functioning explained by each candidate measure of FAD and FD was recorded. (D) The analysis was bootstrapped to test statistical significance o ...
... candidate traits was used to calculate a candidate measure of FAD and FD of each experimental plot in the analysis. (C) The amount of variance in ecosystem functioning explained by each candidate measure of FAD and FD was recorded. (D) The analysis was bootstrapped to test statistical significance o ...
Effect of abiotic factors on reproduction in the centre and periphery
... Variables such as weather or other abiotic factors should have a higher influence on demographic rates in border areas than in central areas, given that climatic adaptation might be important in determining range borders. Similarly, for a given area, the relationship between weather and reproduction ...
... Variables such as weather or other abiotic factors should have a higher influence on demographic rates in border areas than in central areas, given that climatic adaptation might be important in determining range borders. Similarly, for a given area, the relationship between weather and reproduction ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.