INSECTS ON PLANTS: Diversity of Herbivore Assemblages Revisited
... thus, evinced no effect on herbivore richness, although this finding may be partly due to the recent (i.e., postglacial) establishment of the British biota. They also reexamined the separate explanatory contributions of host frequency at the local (2-km units) and the regional scale and found that h ...
... thus, evinced no effect on herbivore richness, although this finding may be partly due to the recent (i.e., postglacial) establishment of the British biota. They also reexamined the separate explanatory contributions of host frequency at the local (2-km units) and the regional scale and found that h ...
Bee diversity effects on pollination depend on functional
... Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany ...
... Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany ...
Limiting similarity, species packing, and the shape of
... resident species) imposes no limit on species packing in a deterministic environment. An important aim of some of the recent work (Pigolotti et al., 2007; Leimar et al., 2008; Hernández-Garcı́a et al., 2009; Pigolotti et al., 2010) has been to investigate the consequences for species clustering of ...
... resident species) imposes no limit on species packing in a deterministic environment. An important aim of some of the recent work (Pigolotti et al., 2007; Leimar et al., 2008; Hernández-Garcı́a et al., 2009; Pigolotti et al., 2010) has been to investigate the consequences for species clustering of ...
Succession of Wood-inhabiting Fungal Communities
... different communities can be shaped by differences in environmental factors between habitat patches as well as biotic interactions within patches. During community development, a species may not establish in a patch because the abiotic conditions do not match its ecological requirements. Furthermore ...
... different communities can be shaped by differences in environmental factors between habitat patches as well as biotic interactions within patches. During community development, a species may not establish in a patch because the abiotic conditions do not match its ecological requirements. Furthermore ...
"Balance of Nature" metaphor in population ecology
... create a persistence of larger populations and indeed, small fluctuations in an average density over a large area (Definition 4). Equilibrium concepts continue to dominate ecological thinking. Hastings et al. (1993) noted that " underlying the focus on stable equilibrium is the assumption that commu ...
... create a persistence of larger populations and indeed, small fluctuations in an average density over a large area (Definition 4). Equilibrium concepts continue to dominate ecological thinking. Hastings et al. (1993) noted that " underlying the focus on stable equilibrium is the assumption that commu ...
New Zealand`s indigenous forests and shrublands
... on ecosystems). Often these factors are themselves correlated so it is challenging to define causal relationships. This chapter first describes what we know about how disturbance, and related factors (Table 1), drive change in indigenous forests and shrublands, then defines the structure and composi ...
... on ecosystems). Often these factors are themselves correlated so it is challenging to define causal relationships. This chapter first describes what we know about how disturbance, and related factors (Table 1), drive change in indigenous forests and shrublands, then defines the structure and composi ...
Population Structure, Habitat Use, and Diet of Giant Waterbugs in a
... ABSTRACT—In the southern Mexican Cueva del Azufre, a cave ecosystem with high concentrations of toxic hydrogen sulfide, one species of hemipteran (Belostoma cf. bakeri) has adopted a unique ecological function in that it acts as one of the top predators in the subterranean food web, preying on the a ...
... ABSTRACT—In the southern Mexican Cueva del Azufre, a cave ecosystem with high concentrations of toxic hydrogen sulfide, one species of hemipteran (Belostoma cf. bakeri) has adopted a unique ecological function in that it acts as one of the top predators in the subterranean food web, preying on the a ...
Allee effects, extinctions, and chaotic transients in simple population
... predator with a saturating functional response. Within such populations, an individual’s risk of predation decreases as the population’s density increases. The importance of this form of positive density dependence is evidenced by the fact that many prey species have evolved responses to it. Plants ...
... predator with a saturating functional response. Within such populations, an individual’s risk of predation decreases as the population’s density increases. The importance of this form of positive density dependence is evidenced by the fact that many prey species have evolved responses to it. Plants ...
Quantifying and testing coexistence mechanisms arising from
... recruitment alter the competition that occurs during recruitment by altering the density of individuals that are competing for the resources needed for recruitment. For example, if more tree seedlings appear in the forest due to environmental effects, competition between seedlings can be expected to ...
... recruitment alter the competition that occurs during recruitment by altering the density of individuals that are competing for the resources needed for recruitment. For example, if more tree seedlings appear in the forest due to environmental effects, competition between seedlings can be expected to ...
SED221 - National Open University of Nigeria
... xylem and phloem are typical examples of complex tissues. Xylem conducts water and dissolved minerals. It also helps in supporting the plant. The cells of xylem are deat at maturity and are called vessel members and tracheids. The cell walls in xylem tissue form water-conducting pipelines and strent ...
... xylem and phloem are typical examples of complex tissues. Xylem conducts water and dissolved minerals. It also helps in supporting the plant. The cells of xylem are deat at maturity and are called vessel members and tracheids. The cell walls in xylem tissue form water-conducting pipelines and strent ...
Foreman 1-5 - Wilderness.net
... efforts to protect mandate areas (Forest Service Primitive Areas and National Park and Wildlife Refuge roadless areas) and Forest Service roadless areas. I was trained as a grass-roots organizer by Clif Merritt, who organized Westerners to support the Wilderness Act, Ernie Dickerman, who wrote the E ...
... efforts to protect mandate areas (Forest Service Primitive Areas and National Park and Wildlife Refuge roadless areas) and Forest Service roadless areas. I was trained as a grass-roots organizer by Clif Merritt, who organized Westerners to support the Wilderness Act, Ernie Dickerman, who wrote the E ...
Lesson Overview - Enfield High School
... We think of these events as disasters, but many species are adapted to them. Although forest fires kill some trees, for example, other trees are spared, and fire can stimulate their seeds to germinate. Secondary succession can also follow human activities like logging and farming. ...
... We think of these events as disasters, but many species are adapted to them. Although forest fires kill some trees, for example, other trees are spared, and fire can stimulate their seeds to germinate. Secondary succession can also follow human activities like logging and farming. ...
Forest genetic resources conservation and management
... Forests are the single most important repositories of terrestrial biological diversity. They provide a wide range of products and services to people throughout the world. Forest trees and other woody plants help support many other organisms, and have developed complex mechanisms to maintain high lev ...
... Forests are the single most important repositories of terrestrial biological diversity. They provide a wide range of products and services to people throughout the world. Forest trees and other woody plants help support many other organisms, and have developed complex mechanisms to maintain high lev ...
1 - Biology Department | UNC Chapel Hill
... using the methods originating with Braun-Blanquet (1932) to identify and name communities. In ...
... using the methods originating with Braun-Blanquet (1932) to identify and name communities. In ...
Genetic Diversity - jj-sct
... Conserving species often requires resolving conflicts between habitat needs of endangered species and human demands For example, in the U.S. Pacific Northwest, habitat preservation for many species is at odds with timber and mining industries Managing habitat for one species might have positiv ...
... Conserving species often requires resolving conflicts between habitat needs of endangered species and human demands For example, in the U.S. Pacific Northwest, habitat preservation for many species is at odds with timber and mining industries Managing habitat for one species might have positiv ...
Biodiversity, Stability, and Productivity in Competitive Communities
... There are several reasons we use this particular measure of stability. First, it measures whole-system nonlinear dynamics, in contrast with eigenvalue stability, which follows from linear approximations to nonlinear systems. Second, it is intrinsically a nonequilibrium measure—useful because populat ...
... There are several reasons we use this particular measure of stability. First, it measures whole-system nonlinear dynamics, in contrast with eigenvalue stability, which follows from linear approximations to nonlinear systems. Second, it is intrinsically a nonequilibrium measure—useful because populat ...
View - OhioLINK Electronic Theses and Dissertations Center
... Prior research on collaborative approaches has occurred extensively in relation to watershed management. However, such an analysis has yet to be conducted on the role collaborative partnerships play in managing invasive species. The management of invasive species had largely been carried out by stat ...
... Prior research on collaborative approaches has occurred extensively in relation to watershed management. However, such an analysis has yet to be conducted on the role collaborative partnerships play in managing invasive species. The management of invasive species had largely been carried out by stat ...
Climate change adaptation plans for South African biomes
... (i.e. food; fibre and medicine, etc.) and services (i.e. air and water purification; climate regulation; erosion control and nutrient cycling, etc.). South Africa is also affected by pressing socio-economic challenges such as poverty and lack of basic infrastructure and services, as well as signific ...
... (i.e. food; fibre and medicine, etc.) and services (i.e. air and water purification; climate regulation; erosion control and nutrient cycling, etc.). South Africa is also affected by pressing socio-economic challenges such as poverty and lack of basic infrastructure and services, as well as signific ...
Ch 54 Notes - Dublin City Schools
... effects can be summarized as positive (+), negative (–), or no effect (0) Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... effects can be summarized as positive (+), negative (–), or no effect (0) Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
climate change adaptation plans for south african biomes
... (i.e. food; fibre and medicine, etc.) and services (i.e. air and water purification; climate regulation; erosion control and nutrient cycling, etc.). South Africa is also affected by pressing socio-economic challenges such as poverty and lack of basic infrastructure and services, as well as signific ...
... (i.e. food; fibre and medicine, etc.) and services (i.e. air and water purification; climate regulation; erosion control and nutrient cycling, etc.). South Africa is also affected by pressing socio-economic challenges such as poverty and lack of basic infrastructure and services, as well as signific ...
Proceedings - World Lagomorph Society
... Lagomorph Conference (WLC) was held in Portugal (2004). This society was inspired by the need to improve cooperation and collaboration among lagomorph researchers, to spread existing information on lagomorphs, and to promote greater collaboration. Thus, some of the mains aims of the WLS are to act a ...
... Lagomorph Conference (WLC) was held in Portugal (2004). This society was inspired by the need to improve cooperation and collaboration among lagomorph researchers, to spread existing information on lagomorphs, and to promote greater collaboration. Thus, some of the mains aims of the WLS are to act a ...
Limnol. Oceanogr., 44(3, part 2), 1999, 950–97
... used to test hypotheses about patterns and effects. However, the methods differ in their capacity to discern cause-effect relationships among the many changes or events that correspond in space and time with an invasion. The stringency of criteria that must be met, and our confidence in the likeliho ...
... used to test hypotheses about patterns and effects. However, the methods differ in their capacity to discern cause-effect relationships among the many changes or events that correspond in space and time with an invasion. The stringency of criteria that must be met, and our confidence in the likeliho ...
Succession
... We think of these events as disasters, but many species are adapted to them. Although forest fires kill some trees, for example, other trees are spared, and fire can stimulate their seeds to germinate. Secondary succession can also follow human activities like logging and farming. ...
... We think of these events as disasters, but many species are adapted to them. Although forest fires kill some trees, for example, other trees are spared, and fire can stimulate their seeds to germinate. Secondary succession can also follow human activities like logging and farming. ...
COSEWIC assessment and status report on the Marbled Murrelet
... recruitment has been reported in years of El Niño or when coastal upwelling fails. As oceans warm, increased competition with southern stocks of mackerel and large Humboldt squid could also be a threat as these piscivores could reduce prey stocks for murrelets. Other present or future threats includ ...
... recruitment has been reported in years of El Niño or when coastal upwelling fails. As oceans warm, increased competition with southern stocks of mackerel and large Humboldt squid could also be a threat as these piscivores could reduce prey stocks for murrelets. Other present or future threats includ ...
Chapter 14-5: Anurans - Bryophyte Ecology
... Central and South American mossy habitats provide good places for tiny frogs. Some of these frogs are primarily stream dwellers that go ashore to feed as adults (Figure 1). Others live on the forest floor of mossy forests, or in the Páramo. But the most elusive are the ones that live in trees where ...
... Central and South American mossy habitats provide good places for tiny frogs. Some of these frogs are primarily stream dwellers that go ashore to feed as adults (Figure 1). Others live on the forest floor of mossy forests, or in the Páramo. But the most elusive are the ones that live in trees where ...
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.