Biodiversity and Ecosystem Services
... systems, inland wetlands and coastal and marine systems and the species they contain. These changes will have inevitable impacts on national food security; rural livelihoods, nutrition and health; and overall economic development, particularly in the fields of tourism and external trade. Although al ...
... systems, inland wetlands and coastal and marine systems and the species they contain. These changes will have inevitable impacts on national food security; rural livelihoods, nutrition and health; and overall economic development, particularly in the fields of tourism and external trade. Although al ...
Abundance, Diversity, and Activity of Ants (Hymenoptera: Formicidae)
... are remarkable when they reach extremely high populations. Ant populations often are relatively stable among the seasons and years. Their abundance and stability make ants one of the most important groups of insects in ecosystems. Ant societies are susceptible to environmental disturbances by being ...
... are remarkable when they reach extremely high populations. Ant populations often are relatively stable among the seasons and years. Their abundance and stability make ants one of the most important groups of insects in ecosystems. Ant societies are susceptible to environmental disturbances by being ...
Using Network Analysis to infer impact of climate change on
... complexity of direct and indirect interactions linking species within ecosystems is so ...
... complexity of direct and indirect interactions linking species within ecosystems is so ...
Creating ponds for amphibians and reptiles
... Clean water. Because they can tolerate fish, toads are happy in ponds linked to streams and ditches. However in the long-term, stream-fed ponds tend to fill in more quickly with silt and are often polluted with nutrients, reducing their value for other wildlife. Toads also prefer ponds with clear wa ...
... Clean water. Because they can tolerate fish, toads are happy in ponds linked to streams and ditches. However in the long-term, stream-fed ponds tend to fill in more quickly with silt and are often polluted with nutrients, reducing their value for other wildlife. Toads also prefer ponds with clear wa ...
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... result of disproportionally high culling of animals from the Central Interior herd compared to the Northern herd due to implementation of IBMP practices.2 Second, management practices have brought about adverse demographic changes including differential impacts on cows and bulls and loss of family g ...
... result of disproportionally high culling of animals from the Central Interior herd compared to the Northern herd due to implementation of IBMP practices.2 Second, management practices have brought about adverse demographic changes including differential impacts on cows and bulls and loss of family g ...
CRB_Monit_Frwk_2Nov09-both
... age, sex, etc) will be reported. If current survey designs cannot report precision and accuracy, then designs will need to be modified. Under most circumstances anadromous primary populations, were identified, will be monitored at a higher precision level than other populations. Typical exceptions c ...
... age, sex, etc) will be reported. If current survey designs cannot report precision and accuracy, then designs will need to be modified. Under most circumstances anadromous primary populations, were identified, will be monitored at a higher precision level than other populations. Typical exceptions c ...
Ecology of Native Animals in California Grasslands
... historical perspective as well as within the context of our modern-day understanding of grasslands in California. Emphasis is given to the ecological relations of small mammals, particularly burrowing rodents, because a large amount of natural history information on them exists and they have been st ...
... historical perspective as well as within the context of our modern-day understanding of grasslands in California. Emphasis is given to the ecological relations of small mammals, particularly burrowing rodents, because a large amount of natural history information on them exists and they have been st ...
The Weed Impact to Native Species
... despite large numbers of alien introductions (e.g. 2800 naturalized plants in Australia – see Groves et al. 2003), and calls for information on the species at risk (see Adair and Groves 1998, Grice et al. 2004, Groves 2004) little has been done to collate such information for alien plants in Austral ...
... despite large numbers of alien introductions (e.g. 2800 naturalized plants in Australia – see Groves et al. 2003), and calls for information on the species at risk (see Adair and Groves 1998, Grice et al. 2004, Groves 2004) little has been done to collate such information for alien plants in Austral ...
ECOSYSTEM FUNCTION, PRINCIPLES OF
... There are many examples in which a change in a limiting factor alters ecosystem function. The large increase in the amount of nitrogen cycling in the environment from fertilizers and fossil fuel should have significant effects on rates of ecosystem functions since nitrogen frequently is the primary l ...
... There are many examples in which a change in a limiting factor alters ecosystem function. The large increase in the amount of nitrogen cycling in the environment from fertilizers and fossil fuel should have significant effects on rates of ecosystem functions since nitrogen frequently is the primary l ...
Extinctions in Ecological Communities – Alva Curtsdotter
... In the dawning of what may become Earth’s 6th mass extinction the topic of this thesis, understanding extinction processes and what determines the magnitude of species loss, has become only too relevant. The number of known extinctions (~850) during the last centuries translates to extinction rates ...
... In the dawning of what may become Earth’s 6th mass extinction the topic of this thesis, understanding extinction processes and what determines the magnitude of species loss, has become only too relevant. The number of known extinctions (~850) during the last centuries translates to extinction rates ...
Life history
... Why complex life cycles? Small offspring may experience environment very differently than larger parents For example, a tadpole is more strongly affected by surface tension and viscosity than an adult frog ...
... Why complex life cycles? Small offspring may experience environment very differently than larger parents For example, a tadpole is more strongly affected by surface tension and viscosity than an adult frog ...
Section 4 - Town of Concord MA
... es, large agricultural areas, major wildlife corridors, water bodies and adjacent land, and certain unique features and microenvironments contribute to Concord’s special character. For the purpose of this plan, large natural areas are defined as patches of relatively natural vegetation that are int ...
... es, large agricultural areas, major wildlife corridors, water bodies and adjacent land, and certain unique features and microenvironments contribute to Concord’s special character. For the purpose of this plan, large natural areas are defined as patches of relatively natural vegetation that are int ...
Patterns of morphology and resource use in North American desert
... predation and competition, have been advanced as the ultimate cause of the patterns. We outline the wav in which each of these factors could produce observed community-level patterns and review the evidence for the action of each factor. We conclude that the "competition" hypothesis has more support ...
... predation and competition, have been advanced as the ultimate cause of the patterns. We outline the wav in which each of these factors could produce observed community-level patterns and review the evidence for the action of each factor. We conclude that the "competition" hypothesis has more support ...
j.0022-1112.2005.00934.x.doc
... relationships, as would have been the case if depth had been used as a continuous variable. Patterns in microhabitat use were analysed using generalized linear models (GLMs) for CPUE (Crawley, 2002) and ANOVA for fish size (Copp & Jurajda, 1999). Since CPUE is a variable derived from count data, Poi ...
... relationships, as would have been the case if depth had been used as a continuous variable. Patterns in microhabitat use were analysed using generalized linear models (GLMs) for CPUE (Crawley, 2002) and ANOVA for fish size (Copp & Jurajda, 1999). Since CPUE is a variable derived from count data, Poi ...
Wooded habitat edges as refugia from microtine herbivory in
... forb native to Eurasia. Black medic has been shown to be palatable to voles in previous trials (Danielson, unpubl.), so it could be used to indicate the relative palatability of native species. The placement of eight seedlings of each species into a 4 × 4 tray was randomized by a latin square design ...
... forb native to Eurasia. Black medic has been shown to be palatable to voles in previous trials (Danielson, unpubl.), so it could be used to indicate the relative palatability of native species. The placement of eight seedlings of each species into a 4 × 4 tray was randomized by a latin square design ...
conclusions from phytoplankton surveys
... developed during the 1980s (Sommer et al., 1986). Meantime, the “classical” succession theory underwent many changes (Pickett and McDonnell, 1989); most notably it embraced stochasticity (Drury and Nisbet, 1973; Czárán and Bartha, 1992). The Mosaic Cycle Theory of plant succession (Remmert, 1991) qu ...
... developed during the 1980s (Sommer et al., 1986). Meantime, the “classical” succession theory underwent many changes (Pickett and McDonnell, 1989); most notably it embraced stochasticity (Drury and Nisbet, 1973; Czárán and Bartha, 1992). The Mosaic Cycle Theory of plant succession (Remmert, 1991) qu ...
Competitive Ability and Species Coexistence: A `Plant`s
... assumesthat resourcesupply/demandratio is sufficientlylow and that the extent to whichdemandsare madeon the same resourceunitsis sufficientlygreatfor plantsof differentspecies to competeintensely.It also assumeshoweverthat, severalgeneticallyvariableattributescombineto definethe competitiveabilityof ...
... assumesthat resourcesupply/demandratio is sufficientlylow and that the extent to whichdemandsare madeon the same resourceunitsis sufficientlygreatfor plantsof differentspecies to competeintensely.It also assumeshoweverthat, severalgeneticallyvariableattributescombineto definethe competitiveabilityof ...
Full-Text PDF
... potential [70,71], even in environmental specialists [72]. Most recent studies of environmental impacts on insect communities have been aimed at land use changes such as urbanization, agricultural intensification, habitat disruption and/or fragmentation, and only recently on impacts of rapid climate ...
... potential [70,71], even in environmental specialists [72]. Most recent studies of environmental impacts on insect communities have been aimed at land use changes such as urbanization, agricultural intensification, habitat disruption and/or fragmentation, and only recently on impacts of rapid climate ...
Species Invasions Exceed Extinctions on Islands Worldwide: A
... differences in the history of human occupation of these islands and to the possibility of undocumented species extinctions. These results suggest that species richness may be increasing at subglobal scales for many groups and that future research should address what consequences this may have on eco ...
... differences in the history of human occupation of these islands and to the possibility of undocumented species extinctions. These results suggest that species richness may be increasing at subglobal scales for many groups and that future research should address what consequences this may have on eco ...
Chapter 52: An Introduction to Ecology and the Biosphere
... The next three chapters on population, community, and ecosystem ecology provide the academic backbone for this unit on ecology. Each chapter is a different organizational level in ecology, starting with population ecology. Before beginning your study of each chapter, be sure you have a clear underst ...
... The next three chapters on population, community, and ecosystem ecology provide the academic backbone for this unit on ecology. Each chapter is a different organizational level in ecology, starting with population ecology. Before beginning your study of each chapter, be sure you have a clear underst ...
Pollinators in Rangelands
... —to properly take care of the basic rangeland resources of soil, plants and water; —to develop an understanding of range ecosystems and of the principles applicable to the management of range resources; —to assist all who work with range resources to keep abreast of new findings and techniques in th ...
... —to properly take care of the basic rangeland resources of soil, plants and water; —to develop an understanding of range ecosystems and of the principles applicable to the management of range resources; —to assist all who work with range resources to keep abreast of new findings and techniques in th ...
Ecological Resilience, Biodiversity, and Scale
... ecological function is preserved if population declines of zooplankton species are compensated for by population increases in other species with similar ecological functions. Their results suggest that lakes with fewer species in a functional group would exhibit decreased ability to compensate for p ...
... ecological function is preserved if population declines of zooplankton species are compensated for by population increases in other species with similar ecological functions. Their results suggest that lakes with fewer species in a functional group would exhibit decreased ability to compensate for p ...
Species at a Glance: Colonial Tunicates
... The primary economic impact of colonial tunicates is fouling. Aquaculture, recreational boating, and shipping industries must spend time and money removing adult colonies from structures in the water. Shellfish farms must also remove tunicates from the shells of their har vest, because an uncontrol ...
... The primary economic impact of colonial tunicates is fouling. Aquaculture, recreational boating, and shipping industries must spend time and money removing adult colonies from structures in the water. Shellfish farms must also remove tunicates from the shells of their har vest, because an uncontrol ...
On the organization of ecosystems Veldhuis, Michiel
... essential materials (carbon, nutrients). For example: species A produces the resources needed by species B, B produces the resources needed by C and C produces the resources needed by A (Fig 1A). Similar to biochemical autocatalytic loops in a cell, such ecological autocatalytic loops in ecosystems ...
... essential materials (carbon, nutrients). For example: species A produces the resources needed by species B, B produces the resources needed by C and C produces the resources needed by A (Fig 1A). Similar to biochemical autocatalytic loops in a cell, such ecological autocatalytic loops in ecosystems ...
Document
... Second, marine taxa with a high survival rate (implying gene pool breadth) on a geological time scale are more likely to colonize new habitats, both marine and freshwater, than taxa with a low survival rate. By example, the extinct trilobites would have a zero probability for a modern colonization o ...
... Second, marine taxa with a high survival rate (implying gene pool breadth) on a geological time scale are more likely to colonize new habitats, both marine and freshwater, than taxa with a low survival rate. By example, the extinct trilobites would have a zero probability for a modern colonization o ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.