Goyder Institute for Water Research Technical Report Series No. 15/45
... antecedent metrics which related to timing, rate of change, duration and not just amount of water relate to patterns in fish community state. Using all available flow data in the basin, volume related metrics were generated to determine if the trends observed in the Neales appeared to hold true acro ...
... antecedent metrics which related to timing, rate of change, duration and not just amount of water relate to patterns in fish community state. Using all available flow data in the basin, volume related metrics were generated to determine if the trends observed in the Neales appeared to hold true acro ...
Diss für PDF - Deutsche Digitale Bibliothek
... patterns. Conditions in marine areas range from saline to brackish water, from shallow to deep and from temperatures between -1.9 and 40°C, includ ing coastal and estuarine areas (Lalli and Parsons 1993). The geographical distribution of a species depends on abiotic and biotic factors. A species is ...
... patterns. Conditions in marine areas range from saline to brackish water, from shallow to deep and from temperatures between -1.9 and 40°C, includ ing coastal and estuarine areas (Lalli and Parsons 1993). The geographical distribution of a species depends on abiotic and biotic factors. A species is ...
Queensland Wildlife Trade Management Plan for Export
... the Governor-in-Council to make regulation for the purposes of the Act. This regulation deals with licenses, authorities and permits used in taking and keeping wildlife. Nature Conservation (Management) Regulation 2006—subordinate legislation, which applies to wildlife not in a protected area and ...
... the Governor-in-Council to make regulation for the purposes of the Act. This regulation deals with licenses, authorities and permits used in taking and keeping wildlife. Nature Conservation (Management) Regulation 2006—subordinate legislation, which applies to wildlife not in a protected area and ...
POTENTIAL TECHNIQUES FOR MARKING AND TAGGING
... VIFE has been used successfully in both captive and wild populations of seahorses. In ex situ studies, VIFE has been used to tag H .abdominalis (Woods & Martin-Smith 2004) and H. capensis (Le Cheminant 2000). In situ, VIFE has been applied to wild populations of H. abdominalis (van Dijken 2001. Mart ...
... VIFE has been used successfully in both captive and wild populations of seahorses. In ex situ studies, VIFE has been used to tag H .abdominalis (Woods & Martin-Smith 2004) and H. capensis (Le Cheminant 2000). In situ, VIFE has been applied to wild populations of H. abdominalis (van Dijken 2001. Mart ...
A review of the state of ecological knowledge
... islands, where Taylor (1945) found deeper dredging (to 55 m) and intertidal collecting to be particularly productive. He also found dredging in the waters offshore of Puerto Ayora (in Academy Bay, Santa Cruz Island, today the largest settlement in Galápagos) to be “a spectacular success” while the i ...
... islands, where Taylor (1945) found deeper dredging (to 55 m) and intertidal collecting to be particularly productive. He also found dredging in the waters offshore of Puerto Ayora (in Academy Bay, Santa Cruz Island, today the largest settlement in Galápagos) to be “a spectacular success” while the i ...
Status of the Barred Owl (Strix varia) in Alberta
... of large, continuous blocks of mature forest habitat (Alberta Sustainable Resource Development 2001). Habitat for the barred owl is under pressure because of increasing demand on forest resources as well as an expanding industrial footprint in the province. Although the long-term effects of these ac ...
... of large, continuous blocks of mature forest habitat (Alberta Sustainable Resource Development 2001). Habitat for the barred owl is under pressure because of increasing demand on forest resources as well as an expanding industrial footprint in the province. Although the long-term effects of these ac ...
The Impacts of Shoreline Development on Shallow-water Benthic Communities in the Patuxent River, MD
... Chesapeake Bay watershed alone has experienced a three-fold increase in population size in the past 100 years (Kemp et al. 2005). As human development progresses farther seaward, changes in land-use patterns may result in alterations of physical and chemical processes that occur at the land-water in ...
... Chesapeake Bay watershed alone has experienced a three-fold increase in population size in the past 100 years (Kemp et al. 2005). As human development progresses farther seaward, changes in land-use patterns may result in alterations of physical and chemical processes that occur at the land-water in ...
Full species report here.
... characteristics that make it resilient to fishing, e.g., early maturing (<5 years), short lived (< 10 years), small maximum size, and low on food chain. Medium = FishBase vulnerability score for species 36-55 OR life history characteristics that make it neither particularly vulnerable or resilient t ...
... characteristics that make it resilient to fishing, e.g., early maturing (<5 years), short lived (< 10 years), small maximum size, and low on food chain. Medium = FishBase vulnerability score for species 36-55 OR life history characteristics that make it neither particularly vulnerable or resilient t ...
conservation action plan for the russian far east ecoregion complex
... 9. CONCLUSIONS OF THE BIODIVERSITY AND SOCIO-ECONOMIC ASSESSMENT 9.1. Review of Priority Areas for Conservation 9.2. Vision for Biodiversity Conservation in the RFE 9.3. Achieving the Biodiversity Vision ...
... 9. CONCLUSIONS OF THE BIODIVERSITY AND SOCIO-ECONOMIC ASSESSMENT 9.1. Review of Priority Areas for Conservation 9.2. Vision for Biodiversity Conservation in the RFE 9.3. Achieving the Biodiversity Vision ...
Habitat Selection and Indirect Interactions in Fish Communities
... Smith (1988), and Jakobsen et al. (1988), who found that risk-taking behaviour increased with hunger or energy deficit. Larger sizes of many fish species are omnivorous (predators on more than one trophic level), which implies that individuals can, depending on their relative sizes, be prey, competi ...
... Smith (1988), and Jakobsen et al. (1988), who found that risk-taking behaviour increased with hunger or energy deficit. Larger sizes of many fish species are omnivorous (predators on more than one trophic level), which implies that individuals can, depending on their relative sizes, be prey, competi ...
Galápagos macroalgae: A review of the state of ecological knowledge
... islands, where Taylor (1945) found deeper dredging (to 55 m) and intertidal collecting to be particularly productive. He also found dredging in the waters offshore of Puerto Ayora (in Academy Bay, Santa Cruz Island, today the largest settlement in Galápagos) to be “a spectacular success” while the i ...
... islands, where Taylor (1945) found deeper dredging (to 55 m) and intertidal collecting to be particularly productive. He also found dredging in the waters offshore of Puerto Ayora (in Academy Bay, Santa Cruz Island, today the largest settlement in Galápagos) to be “a spectacular success” while the i ...
ecology - Excell Career Online
... today as we become aware of some of the past and current ecological today as we become aware of some of the past and current ecological malpractices. It is important for everyone to know and appreciate the principles of this aspect of biology so that one can form an intelligent opinion regarding top ...
... today as we become aware of some of the past and current ecological today as we become aware of some of the past and current ecological malpractices. It is important for everyone to know and appreciate the principles of this aspect of biology so that one can form an intelligent opinion regarding top ...
Grades 9-12 Teacher Guide
... help high school students understand how all the pieces of their science knowledge are inter-related and to demonstrate how to connect those pieces to solve the puzzle of the natural world around them. This teacher guide includes activities that have been designed to be incorporated into and to sa ...
... help high school students understand how all the pieces of their science knowledge are inter-related and to demonstrate how to connect those pieces to solve the puzzle of the natural world around them. This teacher guide includes activities that have been designed to be incorporated into and to sa ...
Stoichiometric Constraints on Resource Use
... 1999). Despite their importance in elemental cycling, decomposers have long been studied as a black box about which little was known regarding its internal structure and dynamics (Tiedje et al. 1999). The explanation for this state of affairs lies at least partly in the technical difficulties of sep ...
... 1999). Despite their importance in elemental cycling, decomposers have long been studied as a black box about which little was known regarding its internal structure and dynamics (Tiedje et al. 1999). The explanation for this state of affairs lies at least partly in the technical difficulties of sep ...
The Impact of Non-Native Species - Case Study: The Signal Crayfish
... In freshwater habitats, hundreds of species have been moved outside their native ranges both intentionally and inadvertently, by discharge of ballast waters and releases from aquaria, the horticultural and agricultural trades, in bait buckets and netting, and so forth. Fish and invertebrate species ...
... In freshwater habitats, hundreds of species have been moved outside their native ranges both intentionally and inadvertently, by discharge of ballast waters and releases from aquaria, the horticultural and agricultural trades, in bait buckets and netting, and so forth. Fish and invertebrate species ...
The Role of Body Size in Complex Food Webs: A Cold - ePIC
... et al., 1998), large-bodied or slow-growing species, with late maturity tend to decline or go extinct more rapidly than those that are smaller (Cardillo, 2003; Layer et al., 2011; McKinney, 1997). This suggests that some life-history traits like body size are linked to susceptibility to extinction a ...
... et al., 1998), large-bodied or slow-growing species, with late maturity tend to decline or go extinct more rapidly than those that are smaller (Cardillo, 2003; Layer et al., 2011; McKinney, 1997). This suggests that some life-history traits like body size are linked to susceptibility to extinction a ...
Fisheries Management Plan for Leech Lake 2016
... relatively stable since. Gill net catch rates of Walleye, female spawner abundance, Walleye recruitment, and targeting angler catch rates have been at or above long-term averages and/or objective ranges for several years. Overall, the Walleye population has fully recovered. The protected slot limit ...
... relatively stable since. Gill net catch rates of Walleye, female spawner abundance, Walleye recruitment, and targeting angler catch rates have been at or above long-term averages and/or objective ranges for several years. Overall, the Walleye population has fully recovered. The protected slot limit ...
Investigation of sympatric speciation as the outcome of competition
... Figure 2.2. The initial Prey FCM including concepts and edges for the dual resource version of the EcoSim. The width of each edge shows its influence value. The color of an edge shows inhibitory (red) or excitatory (blue) effects............................................................. 35 Figure ...
... Figure 2.2. The initial Prey FCM including concepts and edges for the dual resource version of the EcoSim. The width of each edge shows its influence value. The color of an edge shows inhibitory (red) or excitatory (blue) effects............................................................. 35 Figure ...
Recovery Strategy for the Sea Otter (Enhydra lutris) in Canada [Final
... national effort to protect and conserve species at risk in Canada. SARA came into force in 2003 and one of its purposes is “to provide for the recovery of wildlife species that are extirpated, endangered or threatened as a result of human activity.” What is recovery? In the context of species at ris ...
... national effort to protect and conserve species at risk in Canada. SARA came into force in 2003 and one of its purposes is “to provide for the recovery of wildlife species that are extirpated, endangered or threatened as a result of human activity.” What is recovery? In the context of species at ris ...
A US–Canada Science Symposium, 27–30 November 2012
... show that when climate change affects things people care about, they pay attention. Links to media highlights can be found at the ...
... show that when climate change affects things people care about, they pay attention. Links to media highlights can be found at the ...
as a PDF
... biocontrol efforts, have declined to more or less tolerable levels (Mead, 1979; Cowie, 1992). This decline has been attributed to the biocontrol programmes by their supporters (e.g. Davis and Butler, 1964) and sometimes by an ill-informed and receptive public. Much of the `evidence’ that these preda ...
... biocontrol efforts, have declined to more or less tolerable levels (Mead, 1979; Cowie, 1992). This decline has been attributed to the biocontrol programmes by their supporters (e.g. Davis and Butler, 1964) and sometimes by an ill-informed and receptive public. Much of the `evidence’ that these preda ...
Predation and caribou populations
... North America have undergone major declines during the 1900's (Bergerud 1974). Wolf predation and human harvest have been implicated as the major cause of many of those declines. Increased wolf predation on forest-dwelling caribou populations appears to be related to the range expansion of moose in ...
... North America have undergone major declines during the 1900's (Bergerud 1974). Wolf predation and human harvest have been implicated as the major cause of many of those declines. Increased wolf predation on forest-dwelling caribou populations appears to be related to the range expansion of moose in ...
Ontogenetic variation in the diurnal food and habitat
... from between 2–4 m out from the edge of the littoral macrophyte beds. Dohnut and Hole Ponds contained the ME, MB, LS and LB habitats, while Big Pond had all five habitats. All habitats were sampled using randomly positioned unbaited minnow traps. These minnow traps are constructed from a collapsible ...
... from between 2–4 m out from the edge of the littoral macrophyte beds. Dohnut and Hole Ponds contained the ME, MB, LS and LB habitats, while Big Pond had all five habitats. All habitats were sampled using randomly positioned unbaited minnow traps. These minnow traps are constructed from a collapsible ...
Coral Stress Response Plan for the Coral and Marine Aquarium Fish
... Recent assessment (Johnson & Marshall 2007) of the potential impacts of climate change on the GBR highlights such issues as rises in sea level and sea temperature, changes to ocean chemistry, increased storm prevalence and intensity, altered rainfall patterns and resulting effects on water salinity. ...
... Recent assessment (Johnson & Marshall 2007) of the potential impacts of climate change on the GBR highlights such issues as rises in sea level and sea temperature, changes to ocean chemistry, increased storm prevalence and intensity, altered rainfall patterns and resulting effects on water salinity. ...
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.