Our Changing Sea - Coastal Marine Ecology and Conservation Lab
... Abstract: We investigated the relative roles of natural factors and shoreline harvest leading to localized declines of the black leather chiton, Katharina tunicata, on the Kenai Peninsula, Alaska. Field surveys of the significant predictors of K. tunicata across 11 sites suggest that its current spa ...
... Abstract: We investigated the relative roles of natural factors and shoreline harvest leading to localized declines of the black leather chiton, Katharina tunicata, on the Kenai Peninsula, Alaska. Field surveys of the significant predictors of K. tunicata across 11 sites suggest that its current spa ...
journal.pone.0170
... provides measures of the energy transfer and trophic positions of individuals in natural communities [26]. The advantage by using stable isotopes is that they reflect the diet integrated over a longer period of time, whereas SCA only reveals which prey that recently have been ingested, although with ...
... provides measures of the energy transfer and trophic positions of individuals in natural communities [26]. The advantage by using stable isotopes is that they reflect the diet integrated over a longer period of time, whereas SCA only reveals which prey that recently have been ingested, although with ...
How life-history traits affect ecosystem properties: effects of dispersal
... The resource-ratio theory of plant coexistence (Tilman 1982, 1988), based on the seminal model of León and Tumpson (1975), has been instrumental in our understanding of the intimate linkage between stoichiometry, community assembly and ecosystem functioning. The theory applies to two resources the R ...
... The resource-ratio theory of plant coexistence (Tilman 1982, 1988), based on the seminal model of León and Tumpson (1975), has been instrumental in our understanding of the intimate linkage between stoichiometry, community assembly and ecosystem functioning. The theory applies to two resources the R ...
fred and idah schultz preserve land
... Freshwater Marsh and Pond. Approximately 10 acres of freshwater wetlands were created by this project. The freshwater wetlands provide important wildlife habitat, especially for white ibis. White ibis hatchlings cannot tolerate saltwater fish and require freshwater fish during their early developmen ...
... Freshwater Marsh and Pond. Approximately 10 acres of freshwater wetlands were created by this project. The freshwater wetlands provide important wildlife habitat, especially for white ibis. White ibis hatchlings cannot tolerate saltwater fish and require freshwater fish during their early developmen ...
Seamounts Report Vol 2
... first one, which took place in 2009 aboard the R/V Dr Fridtjof Nansen as part of the EAF-Nansen project, studied the pelagic fauna (in the water column) associated with seamounts, while the second expedition, aboard the RRS James Cook (funded by the Natural Environment Research Council, NERC) in 201 ...
... first one, which took place in 2009 aboard the R/V Dr Fridtjof Nansen as part of the EAF-Nansen project, studied the pelagic fauna (in the water column) associated with seamounts, while the second expedition, aboard the RRS James Cook (funded by the Natural Environment Research Council, NERC) in 201 ...
Western Harvest Mouse (Reithrodontomys megalotis megalotis)
... environmental effects beyond the intended benefits. The planning process based on national guidelines directly incorporates consideration of all environmental effects, with a particular focus on possible impacts upon non-target species or habitats. The results of the SEA are incorporated directly in ...
... environmental effects beyond the intended benefits. The planning process based on national guidelines directly incorporates consideration of all environmental effects, with a particular focus on possible impacts upon non-target species or habitats. The results of the SEA are incorporated directly in ...
Also available as free
... Dr. Paul Ehrlich’s scientific contributions have been substantial and sustained. The quality and depth of his interpretation of environmental issues to students, the general public, and to policy makers is unrivaled. His concern for both environmental quality and environmental justice has rarely bee ...
... Dr. Paul Ehrlich’s scientific contributions have been substantial and sustained. The quality and depth of his interpretation of environmental issues to students, the general public, and to policy makers is unrivaled. His concern for both environmental quality and environmental justice has rarely bee ...
Long-term ecological dynamics: reciprocal
... (Vázquez & Simberloff 2002). Effects of N-fixing species on ecosystem-level properties have been studied by comparing adjacent areas in natural forests in Hawaii with and without an invasive actinorhizal shrub (Vitousek & Walker 1989). (b) Habitat fragmentation Habitat fragmentation through human l ...
... (Vázquez & Simberloff 2002). Effects of N-fixing species on ecosystem-level properties have been studied by comparing adjacent areas in natural forests in Hawaii with and without an invasive actinorhizal shrub (Vitousek & Walker 1989). (b) Habitat fragmentation Habitat fragmentation through human l ...
1 Carp (Cyprinus carpio)
... In Australia, male carp generally mature at 2–4 years of age and females at 3–5 years, with the later ages being in cooler areas. Large numbers of eggs are produced by females and a 4–5 kg carp can produce 1 million eggs or more. The number of eggs produced varies with factors such as fish size and ...
... In Australia, male carp generally mature at 2–4 years of age and females at 3–5 years, with the later ages being in cooler areas. Large numbers of eggs are produced by females and a 4–5 kg carp can produce 1 million eggs or more. The number of eggs produced varies with factors such as fish size and ...
Global amphibian declines: sorting the hypotheses - Collins Lab
... they are introduced is difficult. In addition, aliens can interact with other factors, such as acting as vectors for emerging infectious diseases, resulting in complex indirect effects. Over-exploitation The effect of harvesting on amphibian populations is poorly known, but there is evidence that it ...
... they are introduced is difficult. In addition, aliens can interact with other factors, such as acting as vectors for emerging infectious diseases, resulting in complex indirect effects. Over-exploitation The effect of harvesting on amphibian populations is poorly known, but there is evidence that it ...
Delivering Biodiversity Gain: Experience and Practicalities Dr Julia
... A new project by CIRIA – get involved and be part of the Steering Group! Business Improvement Through Ecology The business benefits of ecology are rarely identified and, typically, ecological requirements are only seen as a cost. Clear, practical guidance on the business benefits of ecology is neede ...
... A new project by CIRIA – get involved and be part of the Steering Group! Business Improvement Through Ecology The business benefits of ecology are rarely identified and, typically, ecological requirements are only seen as a cost. Clear, practical guidance on the business benefits of ecology is neede ...
Goliath grouper issues in Florida: fact or fiction. Christopher C
... Goliath grouper is a native species that evolved on reefs on both sides of the Atlantic over millions of years. It is a natural and integral component of Florida’s reef ecology and thus is not disruptive to the reef community. Truly disruptive species include such non-native species as the Indo-Paci ...
... Goliath grouper is a native species that evolved on reefs on both sides of the Atlantic over millions of years. It is a natural and integral component of Florida’s reef ecology and thus is not disruptive to the reef community. Truly disruptive species include such non-native species as the Indo-Paci ...
ZOOPLANKTON STRUCTURE AND DYNAMICS IN MEDITERRANEAN MARSHES (EMPORDÀ WETLANDS): A SIZE-BASED APPROACH
... Durant aquests quatre anys i mig la colla m’ha sigut essencial, tant per desfogar- me com per animar- me. La Dolors, la Sandra, l’Alba, la Raquel Muñoz i la Rigau, l’Elena, la Maite, la Núria, L’Esther, en Mane l, en Jeppi, en Carles, l’Olga, l’Eduard i en David. I també la Mirèia, l’Anna, la Neus, ...
... Durant aquests quatre anys i mig la colla m’ha sigut essencial, tant per desfogar- me com per animar- me. La Dolors, la Sandra, l’Alba, la Raquel Muñoz i la Rigau, l’Elena, la Maite, la Núria, L’Esther, en Mane l, en Jeppi, en Carles, l’Olga, l’Eduard i en David. I també la Mirèia, l’Anna, la Neus, ...
The Cootes Paradise Fishway
... The bounty and richness of the flora and fauna of coastal marshes of the Great Lakes did not go unnoticed by 19th century settlers. The marshes offered abundant fishing and hunting opportunities, and when drained, they provided fertile farmland with easy access to shipping and water. As a result, ma ...
... The bounty and richness of the flora and fauna of coastal marshes of the Great Lakes did not go unnoticed by 19th century settlers. The marshes offered abundant fishing and hunting opportunities, and when drained, they provided fertile farmland with easy access to shipping and water. As a result, ma ...
Granivory in a Desert Ecosystem: Experimental Evidence for Indirect Facilitation... Rodents Author(s): D. W. Davidson, R. S. Inouye, J. H. Brown
... of local desert habitats in southwestern North America. At our Sonoran Desert study site, both of the major taxa exhibited short-term increase in density when the other taxon was experimentally removed. Over the longer term, density compensation continued at a relatively constant level for rodents i ...
... of local desert habitats in southwestern North America. At our Sonoran Desert study site, both of the major taxa exhibited short-term increase in density when the other taxon was experimentally removed. Over the longer term, density compensation continued at a relatively constant level for rodents i ...
National Range Resources Management Policy (2014)
... Biological Diversity: Variability among living organisms from all sources and the ecological complexes of which they are part. Browse: Twigs or leaves of shrubs and trees those are available for animal consumption Carrying capacity of rangelands: The balance between animal and plant productivity on ...
... Biological Diversity: Variability among living organisms from all sources and the ecological complexes of which they are part. Browse: Twigs or leaves of shrubs and trees those are available for animal consumption Carrying capacity of rangelands: The balance between animal and plant productivity on ...
Stoichiometry and population dynamics
... Population dynamics theory forms the quantitative core from which most ecologists have developed their intuition about how species interactions, heterogeneity, and biodiversity play out in time. Throughout its development, theoretical population biology has built on variants of the Lotka–Volterra eq ...
... Population dynamics theory forms the quantitative core from which most ecologists have developed their intuition about how species interactions, heterogeneity, and biodiversity play out in time. Throughout its development, theoretical population biology has built on variants of the Lotka–Volterra eq ...
- Wiley Online Library
... architecture. The spatial distribution of grasses over a landscape is determined by the interplay between biotic and abiotic processes, such as soil quality, water, fire, grazing pressure and seed dispersal (Anderson et al. 2007a; Anderson, Ritchie & McNaughton 2007b; Blair 1997; Bond & Keeley 2005). ...
... architecture. The spatial distribution of grasses over a landscape is determined by the interplay between biotic and abiotic processes, such as soil quality, water, fire, grazing pressure and seed dispersal (Anderson et al. 2007a; Anderson, Ritchie & McNaughton 2007b; Blair 1997; Bond & Keeley 2005). ...
Marine Ecology Progress Series 241:255
... otters Enhydra lutris in Prince William Sound, Alaska, following the ‘Exxon Valdez’ oil spill. The spill resulted in the removal of a large number of sea otters in 1989, and as of 1998, the portion of the population in the heavily oiled northern Knight Island region had not fully recovered. Between ...
... otters Enhydra lutris in Prince William Sound, Alaska, following the ‘Exxon Valdez’ oil spill. The spill resulted in the removal of a large number of sea otters in 1989, and as of 1998, the portion of the population in the heavily oiled northern Knight Island region had not fully recovered. Between ...
Density-dependent facilitation cascades determine
... Previous research on facilitation cascades has been based on presence/absence manipulations of the foundation species and/or their simulated impacts (Altieri et al. 2007). Effects of foundation species are, however, often density dependent (van Hulzen et al. 2007, Irving and Bertness 2009, Harley an ...
... Previous research on facilitation cascades has been based on presence/absence manipulations of the foundation species and/or their simulated impacts (Altieri et al. 2007). Effects of foundation species are, however, often density dependent (van Hulzen et al. 2007, Irving and Bertness 2009, Harley an ...
Chap21 test review
... Complete each sentence or statement. 13. All the biotic and abiotic factors in an area together make up a(n) ____________________. 14. A group of zebras breaking off from a herd decreases the size of the herd population through ____________________. 15. Ticks feed on the blood of mice in a symbiotic ...
... Complete each sentence or statement. 13. All the biotic and abiotic factors in an area together make up a(n) ____________________. 14. A group of zebras breaking off from a herd decreases the size of the herd population through ____________________. 15. Ticks feed on the blood of mice in a symbiotic ...
Understanding Rangeland Biodiversity
... value over a short period (for example by burning off the grass cover). Because individuals are not liable for long-term damage to the ecosystem, nor are they responsible for the costs of their actions, patterns of intensive short-term exploitation may be both economic and socially acceptable. ...
... value over a short period (for example by burning off the grass cover). Because individuals are not liable for long-term damage to the ecosystem, nor are they responsible for the costs of their actions, patterns of intensive short-term exploitation may be both economic and socially acceptable. ...
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna.