Goliath Grouper: Giant of the Reef1 - EDIS
... Most of the known spawning aggregations are off southwest Florida, but additional aggregations have recently been observed off Florida’s central east coast. It appears that these spawning sites are relatively constant from year to year and consist of wrecks, rock ledges and isolated patch reefs. The ...
... Most of the known spawning aggregations are off southwest Florida, but additional aggregations have recently been observed off Florida’s central east coast. It appears that these spawning sites are relatively constant from year to year and consist of wrecks, rock ledges and isolated patch reefs. The ...
desert bighorn sheep of new mexico
... The goal of the PHVA is to assist the recovery of New Mexico’s desert bighorn sheep. Agency representatives, researchers, sportsmen, landowners and other interested parties are invited to collaboratively analyze the available information (much of which will be gathered before the workshop) and devel ...
... The goal of the PHVA is to assist the recovery of New Mexico’s desert bighorn sheep. Agency representatives, researchers, sportsmen, landowners and other interested parties are invited to collaboratively analyze the available information (much of which will be gathered before the workshop) and devel ...
pdf
... where POC is particulate organic carbon in the water column and the oxygen (O2) and total suspended solids (TSS) functions are logistic responses, which reduce biomass in response to decreased oxygen or increased suspended sediment concentration. The "constant" incorporates factors such as filtratio ...
... where POC is particulate organic carbon in the water column and the oxygen (O2) and total suspended solids (TSS) functions are logistic responses, which reduce biomass in response to decreased oxygen or increased suspended sediment concentration. The "constant" incorporates factors such as filtratio ...
10.0 eelgrass - Humboldt Bay Harbor District
... have demonstrated that both the area covered by eelgrass and the density of eelgrass stems within occupied areas varies through time. Computations reported in Barnhart and others (1992) indicated that almost half of the primary production in Humboldt Bay may result from eelgrass (see EIR Chapter 8), ...
... have demonstrated that both the area covered by eelgrass and the density of eelgrass stems within occupied areas varies through time. Computations reported in Barnhart and others (1992) indicated that almost half of the primary production in Humboldt Bay may result from eelgrass (see EIR Chapter 8), ...
Mechanisms and mitigation of food web change in stream ecosystems
... Freshwater ecosystems reflect the condition of their surrounding landscape, and thus are particularly vulnerable to anthropogenic stressors associated with human land-use. One of the most prevalent stressors on stream ecosystems in agricultural regions, such as the Canterbury Plains of New Zealand, i ...
... Freshwater ecosystems reflect the condition of their surrounding landscape, and thus are particularly vulnerable to anthropogenic stressors associated with human land-use. One of the most prevalent stressors on stream ecosystems in agricultural regions, such as the Canterbury Plains of New Zealand, i ...
Human impacts on how savanna plants interact through fire, resources,... A Dissertation SUBMITTED TO THE FACULTY OF
... Grasslands and savannas harbor immense plant biodiversity. This biodiversity is threatened by land transformation. Moreover, the biodiversity of even intact ecosystems is affected by widespread human impacts on environmental factors – particularly resources, fire, and climate – that underlie interac ...
... Grasslands and savannas harbor immense plant biodiversity. This biodiversity is threatened by land transformation. Moreover, the biodiversity of even intact ecosystems is affected by widespread human impacts on environmental factors – particularly resources, fire, and climate – that underlie interac ...
UNIVERSITY OF CALGARY Direct, indirect and predator
... overseeing the Montane Elk Project that contributed to an incredible amount of valuable research in southwest Alberta, Dr. Mark Hebblewhite for his generosity with his time and significant guidance on many aspects of my work, Carly Sponarski, Isabelle Laporte and Dr. Allan McDevitt for their hard w ...
... overseeing the Montane Elk Project that contributed to an incredible amount of valuable research in southwest Alberta, Dr. Mark Hebblewhite for his generosity with his time and significant guidance on many aspects of my work, Carly Sponarski, Isabelle Laporte and Dr. Allan McDevitt for their hard w ...
Ecological Effects of Pesticides
... particular ecosystem, but also the interactions between species and physical characteristics of the geological environment. From these processes and interactions, the ecosystem gains a recognizable structure and function, and matter and energy are exchanged and cycled through the ecosystem. Over tim ...
... particular ecosystem, but also the interactions between species and physical characteristics of the geological environment. From these processes and interactions, the ecosystem gains a recognizable structure and function, and matter and energy are exchanged and cycled through the ecosystem. Over tim ...
AN EXPERIMENTAL STUDY OF FORAGING AGGRESSION IN TWO
... lead to a broader understanding of both invasion biology and the natural process of community assembly (Karieva 1996, Kolar and Lodge 2001, Sakai et al. 2001, Shea and Chesson 2002). One trait commonly invoked to explain the success of invasive animals is competitive aggression (Holway and Suarez 19 ...
... lead to a broader understanding of both invasion biology and the natural process of community assembly (Karieva 1996, Kolar and Lodge 2001, Sakai et al. 2001, Shea and Chesson 2002). One trait commonly invoked to explain the success of invasive animals is competitive aggression (Holway and Suarez 19 ...
The Biology of Lakes and Ponds
... climatic conditions creates a tremendous difference in the environmental conditions experienced by the organisms that inhabit these systems. Thus, organisms from different systems are expected to show a substantial diversity of adaptations to cope with their environment and to be specialized to a sp ...
... climatic conditions creates a tremendous difference in the environmental conditions experienced by the organisms that inhabit these systems. Thus, organisms from different systems are expected to show a substantial diversity of adaptations to cope with their environment and to be specialized to a sp ...
Potential for Entomopathogenic Nematodes in Biological Control:
... environments (i.e., experimental foliar sprays were excluded); (iv) some measure of plant above- or belowground biomass, production, yield, damage or mortality reported. These criteria narrowed considerably the number of studies that could be included in the analyses, and they limit our inference to ...
... environments (i.e., experimental foliar sprays were excluded); (iv) some measure of plant above- or belowground biomass, production, yield, damage or mortality reported. These criteria narrowed considerably the number of studies that could be included in the analyses, and they limit our inference to ...
1
... There is a limit to the natural productive capacity of aquatic ecosystems and therefore a limit to the amount of fish and aquatic organisms that can be harvested from them (Le Cren 1972; Hayes et al. 1993). ...
... There is a limit to the natural productive capacity of aquatic ecosystems and therefore a limit to the amount of fish and aquatic organisms that can be harvested from them (Le Cren 1972; Hayes et al. 1993). ...
Full Text - Cedar Creek Ecosystem Science Reserve
... experiments that measured fewer functions (Supplementary Fig. 1). For instance, the most diverse assemblages in experiments that measured only two functions (N ¼ 41) were predicted to sustain both functions at 79% of their maximum (Supplementary Fig. 1a), very similar to the 81% threshold identified ...
... experiments that measured fewer functions (Supplementary Fig. 1). For instance, the most diverse assemblages in experiments that measured only two functions (N ¼ 41) were predicted to sustain both functions at 79% of their maximum (Supplementary Fig. 1a), very similar to the 81% threshold identified ...
Making Room for Wolf Recovery - Center for Biological Diversity
... (FWS 2013). Scientists estimate that pre-European settlement there may have been as many as 2 million wolves in North America (Leonard et al., 2005). During the late 19th century and early 20th century, state and local bounties reduced wolf numbers. From 1915 through mid-century, the U.S. government ...
... (FWS 2013). Scientists estimate that pre-European settlement there may have been as many as 2 million wolves in North America (Leonard et al., 2005). During the late 19th century and early 20th century, state and local bounties reduced wolf numbers. From 1915 through mid-century, the U.S. government ...
Co-declining mammals and dung beetles: an impending ecological
... 2006) and southeast Asian forests (Corlett 2007), even within the most inaccessible regions (Peres and Lake 2003). This often sets into motion a predictable sequence of sizerelated declines, if not local extinctions, in persistently overhunted forests (Jerozolimski and Peres 2003), sometimes followe ...
... 2006) and southeast Asian forests (Corlett 2007), even within the most inaccessible regions (Peres and Lake 2003). This often sets into motion a predictable sequence of sizerelated declines, if not local extinctions, in persistently overhunted forests (Jerozolimski and Peres 2003), sometimes followe ...
Co-declining mammals and dung beetles: an impending ecological
... 2006) and southeast Asian forests (Corlett 2007), even within the most inaccessible regions (Peres and Lake 2003). This often sets into motion a predictable sequence of sizerelated declines, if not local extinctions, in persistently overhunted forests (Jerozolimski and Peres 2003), sometimes followe ...
... 2006) and southeast Asian forests (Corlett 2007), even within the most inaccessible regions (Peres and Lake 2003). This often sets into motion a predictable sequence of sizerelated declines, if not local extinctions, in persistently overhunted forests (Jerozolimski and Peres 2003), sometimes followe ...
Pen Llŷn a`r Sarnau /Lleyn Peninsula and the Sarnau European
... Sarnau SAC, Glannau Aberdaron ac Ynys Enlli /Aberdaron Coast & Bardsey Island SPA, Mynydd Cilan, Trwyn y Wylfa ac Ynysoedd/Saint Tudwal SPA and Aber Dyfi / Dyfi Estuary SPA, current operations taking place with the SAC and information on modifications as a result of human activity. Section 4 describ ...
... Sarnau SAC, Glannau Aberdaron ac Ynys Enlli /Aberdaron Coast & Bardsey Island SPA, Mynydd Cilan, Trwyn y Wylfa ac Ynysoedd/Saint Tudwal SPA and Aber Dyfi / Dyfi Estuary SPA, current operations taking place with the SAC and information on modifications as a result of human activity. Section 4 describ ...
Plan of Management - Ministry of Environment and Energy
... These policy frameworks and mandates are managed under the following initiatives : l The National Strategy for Biodiversity, adopted in 2001, addresses protection and conservation of special habitats, ecosystems and species. l The Seventh National Development Plan (NDP7) was the first national de ...
... These policy frameworks and mandates are managed under the following initiatives : l The National Strategy for Biodiversity, adopted in 2001, addresses protection and conservation of special habitats, ecosystems and species. l The Seventh National Development Plan (NDP7) was the first national de ...
(Microsoft PowerPoint - Per Nystr\366m Fish
... Productivity (food supply) Substrate availability (water quality: pH, temperature) (physical disturbance in streams) ...
... Productivity (food supply) Substrate availability (water quality: pH, temperature) (physical disturbance in streams) ...
Paper
... for others, and a species with a diverse repertoire of behaviors may respond differently to climate change than species with less flexible life-history strategies. These differences among zooplankton may have dramatic effects on marine ecosystem structure (Peterson, 2009; Johnson et al., 2011). Pop ...
... for others, and a species with a diverse repertoire of behaviors may respond differently to climate change than species with less flexible life-history strategies. These differences among zooplankton may have dramatic effects on marine ecosystem structure (Peterson, 2009; Johnson et al., 2011). Pop ...
natural Systems - International Wolf Center
... in the pack. If they have enough cards for all wolves in the pack to survive, the pack remains the same for the next round. If any pack has extra food cards, they get to “cache” them in a secret place and keep them for the next round. If the pack has not collected enough food, the wolves who collect ...
... in the pack. If they have enough cards for all wolves in the pack to survive, the pack remains the same for the next round. If any pack has extra food cards, they get to “cache” them in a secret place and keep them for the next round. If the pack has not collected enough food, the wolves who collect ...
Appendix 3-2 Rare snail reintro guidelines
... coordinate with the agencies or individuals responsible for the collection and propagation of that snail to ensure a healthy and balanced genetic composition. It must be determined if the reintroduction of snails will be augmenting numbers at an existing population or creating a new one. In addition ...
... coordinate with the agencies or individuals responsible for the collection and propagation of that snail to ensure a healthy and balanced genetic composition. It must be determined if the reintroduction of snails will be augmenting numbers at an existing population or creating a new one. In addition ...
Biological Control Through Intraguild Predation
... There are many examples in agricultural environments (see Table 1). The alternative food source allows the biological control predators to persist even at times of low prey abundance, but the competition for resources weakens the predatory effect on the pest species. From the perspective of the prey ...
... There are many examples in agricultural environments (see Table 1). The alternative food source allows the biological control predators to persist even at times of low prey abundance, but the competition for resources weakens the predatory effect on the pest species. From the perspective of the prey ...
ABSTRACT Title of Document:
... both herbivore and detritivore populations, herbivores experienced reduced predation pressure in the presence of detritivores. By consuming detritivores, predators indirectly limited decomposition. Notably, detritivores enhanced plant biomass when herbivores and predators were excluded. Thus in this ...
... both herbivore and detritivore populations, herbivores experienced reduced predation pressure in the presence of detritivores. By consuming detritivores, predators indirectly limited decomposition. Notably, detritivores enhanced plant biomass when herbivores and predators were excluded. Thus in this ...
Evaluation of the effects of habitat restoration on
... Long Point Bay and its surrounding wetlands are designated as an UNESCO (United Nations Educational, Scientific and Cultural Organization) Biosphere Reserve due to the variety of habitats that support diverse flora and fauna (Thomasen et al. 2013). Long Point Crown Marsh, a coastal wetland, is locat ...
... Long Point Bay and its surrounding wetlands are designated as an UNESCO (United Nations Educational, Scientific and Cultural Organization) Biosphere Reserve due to the variety of habitats that support diverse flora and fauna (Thomasen et al. 2013). Long Point Crown Marsh, a coastal wetland, is locat ...
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.