Fluctuating resources in plant communities: a general theory of invasibility FORUM
... The Theory: A plant community becomes more susceptible to invasion whenever there is an increase in the amount of unused resources. Our theory rests on the simple assumption that an invading species must have access to available resources, e.g. light, nutrients, and water, and that a species will en ...
... The Theory: A plant community becomes more susceptible to invasion whenever there is an increase in the amount of unused resources. Our theory rests on the simple assumption that an invading species must have access to available resources, e.g. light, nutrients, and water, and that a species will en ...
Page 1 of 7 SOCORRO COUNTY, NEW MEXICO ORDINANCE
... that predatory animals, including introduced, experimental and managed species, and predatorhuman encounters pose serious threats to human health and safety, as well as threaten the economic well-being of families and businesses within the County; and, WHEREAS, the Socorro County Board of County Com ...
... that predatory animals, including introduced, experimental and managed species, and predatorhuman encounters pose serious threats to human health and safety, as well as threaten the economic well-being of families and businesses within the County; and, WHEREAS, the Socorro County Board of County Com ...
Understanding the combined biodiversity benefits of the component
... 2. Review of available information on hedge component use 2.1. This review focussed on species recognised as Species of Principal Importance for the conservation of biodiversity under Section 41 (England) and Section 42 (Wales) of the Natural Environment and Rural Communities (NERC) Act (2006). The ...
... 2. Review of available information on hedge component use 2.1. This review focussed on species recognised as Species of Principal Importance for the conservation of biodiversity under Section 41 (England) and Section 42 (Wales) of the Natural Environment and Rural Communities (NERC) Act (2006). The ...
UNEP/CBD/COP/12/INF/7
... McGinnis 2011) have analyzed case studies from around the world and shown that long-term effective and robust resource management systems at the local level share several key characteristics, or so-called ‘design principles’. These design principles correspond to the conditions under which human-env ...
... McGinnis 2011) have analyzed case studies from around the world and shown that long-term effective and robust resource management systems at the local level share several key characteristics, or so-called ‘design principles’. These design principles correspond to the conditions under which human-env ...
“Facts and Fallacies about Polar Bears”Polar Bear Listing
... ice decline were broken in August, 2007, signaling a major loss of the polar bear’s most important habitat. Although 20,000-25,000 seems like a big number, experts predict that based on projections of continued sea ice decline, as early as mid-century, two-thirds of the world’s polar bears could b ...
... ice decline were broken in August, 2007, signaling a major loss of the polar bear’s most important habitat. Although 20,000-25,000 seems like a big number, experts predict that based on projections of continued sea ice decline, as early as mid-century, two-thirds of the world’s polar bears could b ...
A Ravine`s Web of Life - Park District of Highland Park
... step out of the circle. Before they step out have them tug on their part of the yarn. Anyone else who feels the tug should step out as well. 11. Explain that this is an exaggerated model of the ripple effect of changes made to an ecosystem. Changes in the food web could be caused by numerous factors ...
... step out of the circle. Before they step out have them tug on their part of the yarn. Anyone else who feels the tug should step out as well. 11. Explain that this is an exaggerated model of the ripple effect of changes made to an ecosystem. Changes in the food web could be caused by numerous factors ...
Full text in pdf format
... sensu Lawrence 1975) have recently stimulated considerable research particularly on ecological mechanisms responsible for their origin and maintenance. Basically, kelp forest and crustose coralline communities have been shown to represent alternative states (Mann 1977, Harrold & Reed 1985, Scheiblin ...
... sensu Lawrence 1975) have recently stimulated considerable research particularly on ecological mechanisms responsible for their origin and maintenance. Basically, kelp forest and crustose coralline communities have been shown to represent alternative states (Mann 1977, Harrold & Reed 1985, Scheiblin ...
Chap. 7: Effect of habitat and predator exclusion on larval parasitism
... and Pienkowski 1978, Morrison and Strong 1981, Ang and Kok 1995). Exclusion experiments make it possible to assess the quantitative impact of different mortality factors. Quantitative studies using predator exclusion techniques have been conducted only in temperate climates until Memmott et al. (199 ...
... and Pienkowski 1978, Morrison and Strong 1981, Ang and Kok 1995). Exclusion experiments make it possible to assess the quantitative impact of different mortality factors. Quantitative studies using predator exclusion techniques have been conducted only in temperate climates until Memmott et al. (199 ...
Gaagaagimizh Eastern Hemlock Tsuga canadensis
... is native to Asia and possibly western North America. It was introduced to the east coast by 1951. Recent genetic analysis indicates this introduced strain came from Japan. Western hemlocks are resistant to the HWA, but both eastern species are highly susceptible to attack. ...
... is native to Asia and possibly western North America. It was introduced to the east coast by 1951. Recent genetic analysis indicates this introduced strain came from Japan. Western hemlocks are resistant to the HWA, but both eastern species are highly susceptible to attack. ...
Review of the NSW Threatened Species Priorities Action Statement
... Through the PAS, NSW has become one of the first jurisdictions in the world to formally document the management requirements of its threatened species, populations and communities. This represents an important first step in the very large and complex task of recovering more than 1,000 threatened spe ...
... Through the PAS, NSW has become one of the first jurisdictions in the world to formally document the management requirements of its threatened species, populations and communities. This represents an important first step in the very large and complex task of recovering more than 1,000 threatened spe ...
Oh Deer! Do We Have a Problem?
... • One-at-a-time, 4 clues about one of the terms will be shown on the screen. You are to determine the term that all the clues refer to. • Record your work in your science notebook or on a google doc. • Some terms may have similar meanings, so be careful not to answer too soon. ...
... • One-at-a-time, 4 clues about one of the terms will be shown on the screen. You are to determine the term that all the clues refer to. • Record your work in your science notebook or on a google doc. • Some terms may have similar meanings, so be careful not to answer too soon. ...
Species pool size and invasibility of island communities: a null
... species may be either native or alien. Individuals of all species are identical except that species may differ in percapita population growth rates. First, species pools of native and alien species of given sizes and immigration rates are constructed. The only differences between species coming from ...
... species may be either native or alien. Individuals of all species are identical except that species may differ in percapita population growth rates. First, species pools of native and alien species of given sizes and immigration rates are constructed. The only differences between species coming from ...
implications of invasion by juniperus virginiana on small mammals
... mammals in 3 plant communities (tallgrass prairie, old field, and cross-timbers forest) in the cross-timbers ecoregion in Oklahoma. We sampled small mammals seasonally from May 2001 to August 2002 by using Sherman live traps and mark-recapture techniques on 3.24-ha, 450-trap grids in each plant comm ...
... mammals in 3 plant communities (tallgrass prairie, old field, and cross-timbers forest) in the cross-timbers ecoregion in Oklahoma. We sampled small mammals seasonally from May 2001 to August 2002 by using Sherman live traps and mark-recapture techniques on 3.24-ha, 450-trap grids in each plant comm ...
Biodiversity and ecosystem stability: a synthesis of underlying
... interspecific competition from other factors predicts that it should generally have either no effect or a negative effect on the stability of ecosystem properties (Ives et al. 1999; Loreau & de Mazancourt 2008; Loreau 2010). In contrast, mechanistic models of stochastic community dynamics in fluctua ...
... interspecific competition from other factors predicts that it should generally have either no effect or a negative effect on the stability of ecosystem properties (Ives et al. 1999; Loreau & de Mazancourt 2008; Loreau 2010). In contrast, mechanistic models of stochastic community dynamics in fluctua ...
Critical problems for bird conservation in the Galápagos Islands
... Natural disasters. Because of small population sizes of many of these threatened groups, natural disasters such as severe El Niño events and large volcanic eruptions may be significant to Galápagos species. ...
... Natural disasters. Because of small population sizes of many of these threatened groups, natural disasters such as severe El Niño events and large volcanic eruptions may be significant to Galápagos species. ...
Author`s personal copy
... Palaearctic grasslands are known for their high biodiversity in many taxa. For example, at small spatial scales vascular plant diversity of certain European grasslands even exceeds tropical rainforests (Wilson et al., 2012), which are normally considered the most diverse ecosystems on earth. A high ...
... Palaearctic grasslands are known for their high biodiversity in many taxa. For example, at small spatial scales vascular plant diversity of certain European grasslands even exceeds tropical rainforests (Wilson et al., 2012), which are normally considered the most diverse ecosystems on earth. A high ...
Life Cycles, Limiting Factors, and Behavioral
... than 20 cm, where these characins, gobies, and other larger fishes were themselves at risk from diving and wading birds that frequented the river (Power 1984a, 1987). Loricariids smaller than 3-4 cm could hide under cobbles from these birds. When they outgrew this cover, at 4-5 cm SL, they also bega ...
... than 20 cm, where these characins, gobies, and other larger fishes were themselves at risk from diving and wading birds that frequented the river (Power 1984a, 1987). Loricariids smaller than 3-4 cm could hide under cobbles from these birds. When they outgrew this cover, at 4-5 cm SL, they also bega ...
Fish communities in the east african great lakes = Peuplement
... microhabitats (Ribbink et al., 1983a). Some species are narrowly adapted (stenotopic) while others are more catholic (eurytopic). Eurytopic species may range over a wide variety of rocky substrata, perhaps venturing into intermediate zones and may also occur over a broad depth range, but stenotopic ...
... microhabitats (Ribbink et al., 1983a). Some species are narrowly adapted (stenotopic) while others are more catholic (eurytopic). Eurytopic species may range over a wide variety of rocky substrata, perhaps venturing into intermediate zones and may also occur over a broad depth range, but stenotopic ...
Species diversity, invasion success, and ecosystem functioning
... ABSTRACT: Experimental manipulations and observational surveys often produce conflicting conclusions regarding the effects of native species diversity on community susceptibility to invasion. Both provide useful pieces of information, but typically each asks fundamentally different questions. Survey ...
... ABSTRACT: Experimental manipulations and observational surveys often produce conflicting conclusions regarding the effects of native species diversity on community susceptibility to invasion. Both provide useful pieces of information, but typically each asks fundamentally different questions. Survey ...
Critical problems for bird conservation in the Galápagos Islands
... Natural disasters. Because of small population sizes of many of these threatened groups, natural disasters such as severe El Niño events and large volcanic eruptions may be significant to Galápagos species. ...
... Natural disasters. Because of small population sizes of many of these threatened groups, natural disasters such as severe El Niño events and large volcanic eruptions may be significant to Galápagos species. ...
The habitat of Salpa fusiformis in the California current a
... alike than swarm and nonswarm ones. However, the variability of the similarity indices within each category is high and the means of the various conditions differ by as much as 5%. Although no large-scale diffcrcnces in the diatom assemblages found with S. fusiformis can be attributed to the factors ...
... alike than swarm and nonswarm ones. However, the variability of the similarity indices within each category is high and the means of the various conditions differ by as much as 5%. Although no large-scale diffcrcnces in the diatom assemblages found with S. fusiformis can be attributed to the factors ...
Northland`s kauri forests - Department of Conservation
... Nothing is more symbolic of Northland than the kauri. While most of Northland’s kauri forest is gone, felled for its high quality timber or simply burned to make way for farmland, we can still marvel at the splendid forests remaining and plan for new trees to thrive in the future. Most of what is le ...
... Nothing is more symbolic of Northland than the kauri. While most of Northland’s kauri forest is gone, felled for its high quality timber or simply burned to make way for farmland, we can still marvel at the splendid forests remaining and plan for new trees to thrive in the future. Most of what is le ...
THREAT ABATEMENT PLAN
... 1.2.4 The review of the 1999 TAP In accordance with the requirements of the EBPC Act, the original TAP for feral rabbits (EA 1999a) was reviewed in 2004–05 by the Bureau of Rural Sciences (BRS) (Hart 2005) as part of a broader review encompassing the TAPs for foxes (EA 1999b), cats (EA 1999c) and go ...
... 1.2.4 The review of the 1999 TAP In accordance with the requirements of the EBPC Act, the original TAP for feral rabbits (EA 1999a) was reviewed in 2004–05 by the Bureau of Rural Sciences (BRS) (Hart 2005) as part of a broader review encompassing the TAPs for foxes (EA 1999b), cats (EA 1999c) and go ...
Draft National Wildlife Corridors Plan March 2012
... The report of the independent review of the Environment Protection and Biodiversity Conservation Act 1999 suggests that in light of climate change, future biodiversity management should focus on improvement of ecosystem resilience and the connectivity of fragmented ecosystems, the expansion of the N ...
... The report of the independent review of the Environment Protection and Biodiversity Conservation Act 1999 suggests that in light of climate change, future biodiversity management should focus on improvement of ecosystem resilience and the connectivity of fragmented ecosystems, the expansion of the N ...
Structure and Stability of Ecological Networks resource use
... dimensionality of an ecological community based on eigenvalue analysis and investigate its effect on community persistence in stochastic environments (Paper II). Moreover, if we are to gain trustworthy model output, it is of course of major importance to create study systems that reflect the structu ...
... dimensionality of an ecological community based on eigenvalue analysis and investigate its effect on community persistence in stochastic environments (Paper II). Moreover, if we are to gain trustworthy model output, it is of course of major importance to create study systems that reflect the structu ...
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.