... species (Mack and Lonsdale, 2001; Mack and Erneberg, 2002). Of the successful invaders, both environmental and species characteristics can affect the spread of a particular invasive species. A number of ecological and genetic hypotheses have been proposed to explain the mechanisms responsible for a ...
Fear in Wildlife Food Webs: Large Carnivore Predation Risk
... carnivores inspire in their prey may be a critical component of these top-down effects, buffering lower trophic levels from overconsumption by suppressing large herbivore and mesopredator foraging. However, the evidence that the fear of large carnivores cascades through food webs has been repeatedly ...
... carnivores inspire in their prey may be a critical component of these top-down effects, buffering lower trophic levels from overconsumption by suppressing large herbivore and mesopredator foraging. However, the evidence that the fear of large carnivores cascades through food webs has been repeatedly ...
International Single Species Action Plan for the
... This International Single Species Action Plan for the Conservation of the Black-tailed Godwit, Western Palearctic breeding population Limosa l. limosa and the L. l. islandica of Iceland was commissioned by the UNEP/AEWA Secretariat and financially supported by Vogelbescherming Nederland (BirdLife Pa ...
... This International Single Species Action Plan for the Conservation of the Black-tailed Godwit, Western Palearctic breeding population Limosa l. limosa and the L. l. islandica of Iceland was commissioned by the UNEP/AEWA Secretariat and financially supported by Vogelbescherming Nederland (BirdLife Pa ...
A snapshot of the Lesser Kestrel
... Are the existing SPAs enough to ensure Lesser Kestrel conservation? The Castro Verde SPA holds more than 70% of Portugal’s Lesser Kestrel population, which makes it very vulnerable to random phenomena that can cause irreversible damages on the population. Therefore, it’s crucial to ensure the presen ...
... Are the existing SPAs enough to ensure Lesser Kestrel conservation? The Castro Verde SPA holds more than 70% of Portugal’s Lesser Kestrel population, which makes it very vulnerable to random phenomena that can cause irreversible damages on the population. Therefore, it’s crucial to ensure the presen ...
Reproductive Allocation in Plants
... growing season for a tree, or a period of days or weeks for an annual; and (iii) lifetime RA is the proportion of total available resource invested in reproductive structures over the entire lifespan of an individual. This last measure is of most general interest when comparing individuals with diff ...
... growing season for a tree, or a period of days or weeks for an annual; and (iii) lifetime RA is the proportion of total available resource invested in reproductive structures over the entire lifespan of an individual. This last measure is of most general interest when comparing individuals with diff ...
Effects of tree species diversity on insect herbivory
... It is generally believed that tree species growing in mixed forest stands are less susceptible to insect herbivore damage than if grown in monocultures, but previous studies have been largely observational and focussed mainly on tree species richness effects. In this thesis, I examined effects of th ...
... It is generally believed that tree species growing in mixed forest stands are less susceptible to insect herbivore damage than if grown in monocultures, but previous studies have been largely observational and focussed mainly on tree species richness effects. In this thesis, I examined effects of th ...
Negative effects of an autogenic ecosystem engineer: interactions
... ABSTRACT: Organisms that physically modify habitat by their own presence can either positively or negatively affect other species. The direction of the effect depends on how physical variables are modified and the response of species to these variables. In this study, we investigated the interaction ...
... ABSTRACT: Organisms that physically modify habitat by their own presence can either positively or negatively affect other species. The direction of the effect depends on how physical variables are modified and the response of species to these variables. In this study, we investigated the interaction ...
CO # 21: Ensure that structural habitat provided by corals on the
... sea pens and soft corals also contribute to diversity on the seafloor, but do not provide structural habitat in the same manner. Although the other groups of corals are considered less sensitive to fisheries damage, they may be locally important as fish habitat, either on a functional basis, or as c ...
... sea pens and soft corals also contribute to diversity on the seafloor, but do not provide structural habitat in the same manner. Although the other groups of corals are considered less sensitive to fisheries damage, they may be locally important as fish habitat, either on a functional basis, or as c ...
Do marine phytoplankton follow Bergmann`s rule sensu lato
... results from clonal cultures and recent micro- and mesocosm experiments with naturally mixed phytoplankton communities regarding the response of phytoplankton body size to temperature, either as a single factor or in combination with other factors such as grazing, nutrient limitation, and ocean acid ...
... results from clonal cultures and recent micro- and mesocosm experiments with naturally mixed phytoplankton communities regarding the response of phytoplankton body size to temperature, either as a single factor or in combination with other factors such as grazing, nutrient limitation, and ocean acid ...
A conceptual model for conservation planning
... activitiesÐhundreds to thousands of square kilometers and with population dynamics measured in years and decades. The population's use of the landscape, measured over a time signi®cant for conservation purposes, de®nes the area in which we will work to ensure its conservation. The area necessary to ...
... activitiesÐhundreds to thousands of square kilometers and with population dynamics measured in years and decades. The population's use of the landscape, measured over a time signi®cant for conservation purposes, de®nes the area in which we will work to ensure its conservation. The area necessary to ...
Reptile Habitat Management Handbook
... aspects of mitigation, such as legislation, surveys or the amount of habitat to be retained. ...
... aspects of mitigation, such as legislation, surveys or the amount of habitat to be retained. ...
Aquatic Ecosystem Classification - Great Lakes
... the rivers and streams, inland lakes, and wetlands draining into the Great Lakes and the Great Lakes coast, but not the deep water areas of the Great Lakes. The primary goal of this project was to identify representative aquatic natural features and biota in the Great Lakes region for conservation. ...
... the rivers and streams, inland lakes, and wetlands draining into the Great Lakes and the Great Lakes coast, but not the deep water areas of the Great Lakes. The primary goal of this project was to identify representative aquatic natural features and biota in the Great Lakes region for conservation. ...
Predicting Trophic Cascades in an Antagonistic
... that black bears, which are predators of ants, were beneficial for plants. Plants near beardamaged ant nests had greater reproduction than those near undamaged nests, due to weaker ant protection for herbivores, which allowed herbivore suppression by arthropod predators. These results suggest that b ...
... that black bears, which are predators of ants, were beneficial for plants. Plants near beardamaged ant nests had greater reproduction than those near undamaged nests, due to weaker ant protection for herbivores, which allowed herbivore suppression by arthropod predators. These results suggest that b ...
Pipeline Development – Strategies and Tools to Minimize
... Photo: Tamara Gagnolet- TNC • TNC Recommended Conservation Practices ...
... Photo: Tamara Gagnolet- TNC • TNC Recommended Conservation Practices ...
2014 - CSU, Chico
... temperature. Another experiment was done on tomclothier.hort.net, and proved that of the 24 plants grown at varying temperatures, on average 85.3 % grew most effectively at room temperature. It is possible that some sources of error could be due to incorrect soil temperatures. ...
... temperature. Another experiment was done on tomclothier.hort.net, and proved that of the 24 plants grown at varying temperatures, on average 85.3 % grew most effectively at room temperature. It is possible that some sources of error could be due to incorrect soil temperatures. ...
Western Ringtail Possum (Pseudocheirus occidentalis)
... between Binningup and Dunsborough and provides a habitat classification and GIS mapping dataset that can be used for prioritising habitat. Specifically it seeks to provide information on habitat patches that are most important to support a viable population of WRP in this area. An extensive review o ...
... between Binningup and Dunsborough and provides a habitat classification and GIS mapping dataset that can be used for prioritising habitat. Specifically it seeks to provide information on habitat patches that are most important to support a viable population of WRP in this area. An extensive review o ...
Ecological subsystems via graph theory: the role of
... several trophic steps. Whenever one such connection exists, the combination of arrows that form it, is called ‘‘path’’. A ‘‘cycle’’ is a path that originates from one species and returns to it. Strongly connected components individuate the sets of trophospecies (vertices in the network) that are rea ...
... several trophic steps. Whenever one such connection exists, the combination of arrows that form it, is called ‘‘path’’. A ‘‘cycle’’ is a path that originates from one species and returns to it. Strongly connected components individuate the sets of trophospecies (vertices in the network) that are rea ...
Competition as a factor underlying the abundance of an uncommon
... Abstract. 1. Recent reviews of experimental studies provide compelling evidence that competition should be retained as a potential factor influencing the success of phytophagous insects. In this context, the objective of the study was to determine the role of interspecific and intraspecific competit ...
... Abstract. 1. Recent reviews of experimental studies provide compelling evidence that competition should be retained as a potential factor influencing the success of phytophagous insects. In this context, the objective of the study was to determine the role of interspecific and intraspecific competit ...
Maternal Effects in Animal Ecology1
... feet offspring phenotypes, it is highly vari- ecologists on maternal effects as a potenable at many levels in nature, and it has tially significant (i.e., of statistically large rightly received tremendous attention from effect) and meaningful (i.e., w. r. t. fitness) both theoretical and empirical ...
... feet offspring phenotypes, it is highly vari- ecologists on maternal effects as a potenable at many levels in nature, and it has tially significant (i.e., of statistically large rightly received tremendous attention from effect) and meaningful (i.e., w. r. t. fitness) both theoretical and empirical ...
Bogs and Wetlands Factsheet
... the different types of pollen. By taking samples from different layers in the peat, one can make a rough reconstruction of the past vegetation. This technique is called pollen analysis. From pollen analysis on Dartmoor we know that it was covered with oak and hazel. Dartmoor National Park Authority ...
... the different types of pollen. By taking samples from different layers in the peat, one can make a rough reconstruction of the past vegetation. This technique is called pollen analysis. From pollen analysis on Dartmoor we know that it was covered with oak and hazel. Dartmoor National Park Authority ...
Does an evolutionary change in the water sowbug Asellus aquaticus
... Does an evolutionary change in the water sowbug Asellus aquaticus L. alter its functional role? Md. Maidul Islam Choudhury ...
... Does an evolutionary change in the water sowbug Asellus aquaticus L. alter its functional role? Md. Maidul Islam Choudhury ...
Linking invasive exotic vertebrates and their ecosystem impacts in
... Understanding processes and impacts of biological invasions is fundamental for ecology and management. Recent reviews summarized the mechanisms by which invasive species alter entire ecosystems, but quantitative assessments of these mechanisms are lacking for actual assemblages to determine their re ...
... Understanding processes and impacts of biological invasions is fundamental for ecology and management. Recent reviews summarized the mechanisms by which invasive species alter entire ecosystems, but quantitative assessments of these mechanisms are lacking for actual assemblages to determine their re ...
Foothill yellow-legged frog petition
... the northern limit of the species in central Oregon and southern populations on both the Sierrian and coast range sides of the Central Valley are divergent from the rest of the species. Population Status: The foothill yellow-legged frog qualifies for endangered species status because it is experienc ...
... the northern limit of the species in central Oregon and southern populations on both the Sierrian and coast range sides of the Central Valley are divergent from the rest of the species. Population Status: The foothill yellow-legged frog qualifies for endangered species status because it is experienc ...
Effects of Wolf Reintroduction on Plant Communities in the American
... at Oxbow Creek). Scat were not found at Oxbow Creek, but fecal piles collected at the Lamar Valley plots corroborated heavy presence of bison. Of 1,326 fecal piles collected, 1,302 were from bison. The only evidence of elk presence in the summer was a single fecal pile in the 12,620 m2 sampling area ...
... at Oxbow Creek). Scat were not found at Oxbow Creek, but fecal piles collected at the Lamar Valley plots corroborated heavy presence of bison. Of 1,326 fecal piles collected, 1,302 were from bison. The only evidence of elk presence in the summer was a single fecal pile in the 12,620 m2 sampling area ...
Research Information on Acacia Erioloba
... although larger trees survive these. Large, old trees within populations are susceptible to fire (Van der Walt and Le Riche 1984) and storms (Wackernagel 1993, Barnes 1999), however. A. erioloba is able to resprout after fire (Skarpe 1980), felling (Henkel 1931) and herbivory (Barnes 1999), but appe ...
... although larger trees survive these. Large, old trees within populations are susceptible to fire (Van der Walt and Le Riche 1984) and storms (Wackernagel 1993, Barnes 1999), however. A. erioloba is able to resprout after fire (Skarpe 1980), felling (Henkel 1931) and herbivory (Barnes 1999), but appe ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.