plant species diversity in natural and managed forests of the pacific
... management policies. However, studies of the consequences of forest management for plant species diversity are sorely lacking. We present data from permanent-plot and chronosequence studies in managed and unmanaged forests of western Oregon and Washington to describe the early responses of understor ...
... management policies. However, studies of the consequences of forest management for plant species diversity are sorely lacking. We present data from permanent-plot and chronosequence studies in managed and unmanaged forests of western Oregon and Washington to describe the early responses of understor ...
Multiple effects of exotic largemouth bass
... species (Tonn and Magnuson 1982; Rahel 1984). These factors affect predatory performance and the efficiency of piscivorous species, and alter prey-predator interaction. For example, increasing habitat structural complexity with aquatic macrophytes, rocks, or coarse woody materials decreases predatory e ...
... species (Tonn and Magnuson 1982; Rahel 1984). These factors affect predatory performance and the efficiency of piscivorous species, and alter prey-predator interaction. For example, increasing habitat structural complexity with aquatic macrophytes, rocks, or coarse woody materials decreases predatory e ...
Marine Ecology Progress Series 309:175
... shows a negative relationship with sea-surface temperature (SST) between February and June (Fox et al. 2000). The International Council for the Exploration of the Sea (ICES) assessment data for the Celtic Sea stock of cod Gadus morhua (ICES divisions VIIe–k), which includes cod in the western Englis ...
... shows a negative relationship with sea-surface temperature (SST) between February and June (Fox et al. 2000). The International Council for the Exploration of the Sea (ICES) assessment data for the Celtic Sea stock of cod Gadus morhua (ICES divisions VIIe–k), which includes cod in the western Englis ...
Behavior and conservation: a bridge too far?
... might matter under a set of hypothetical conditions. For example, what might happen to a population if a given fishing net size caught only males; and how might groups hunt or defend themselves if they were each reduced to a handful of individuals? By contrast, wildlife managers trying to save specifi ...
... might matter under a set of hypothetical conditions. For example, what might happen to a population if a given fishing net size caught only males; and how might groups hunt or defend themselves if they were each reduced to a handful of individuals? By contrast, wildlife managers trying to save specifi ...
Separating the influence of resource `availability` from resource
... available energy, which as we show below, was originally conceived to be the summed availability of all resources that might limit species population sizes. SET is perhaps the most widely cited explanation of why species richness tends to increase with increasing productivity of an ecosystem (Fi ...
... available energy, which as we show below, was originally conceived to be the summed availability of all resources that might limit species population sizes. SET is perhaps the most widely cited explanation of why species richness tends to increase with increasing productivity of an ecosystem (Fi ...
Genetic diversity
... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
The interplay between habitat structure and chemical
... was chosen as a compromise between allowing enough time for colonization and ensuring the safe recovery of experimental units. We are confident that six weeks were enough to allow colonization representative assemblages since previous studies have shown artificial turfs are rapidly colonized after o ...
... was chosen as a compromise between allowing enough time for colonization and ensuring the safe recovery of experimental units. We are confident that six weeks were enough to allow colonization representative assemblages since previous studies have shown artificial turfs are rapidly colonized after o ...
Functional diversity and traitenvironment relationships of stream fish
... backpack electrofisher (Smith-Root Model LR-24). Electrofishing was performed with a single pass moving upstream across the entire study reach. As a result of the diversity of habitat types across this large region, multiple 2012 Blackwell Publishing Ltd, Freshwater Biology, 57, 1060–1075 ...
... backpack electrofisher (Smith-Root Model LR-24). Electrofishing was performed with a single pass moving upstream across the entire study reach. As a result of the diversity of habitat types across this large region, multiple 2012 Blackwell Publishing Ltd, Freshwater Biology, 57, 1060–1075 ...
Alien grasses in Brazilian savannas
... Apart from these two species and Tristachya leiostachya, the same graminoid species appeared as the most frequent in both cerrado forms, sometimes changing positions in rank value of importance. Tristachya leiostachya did occur in both forms, but it was much less important in cerrado sensu stricto. ...
... Apart from these two species and Tristachya leiostachya, the same graminoid species appeared as the most frequent in both cerrado forms, sometimes changing positions in rank value of importance. Tristachya leiostachya did occur in both forms, but it was much less important in cerrado sensu stricto. ...
Ecological and evolutionary consequences of biotic homogenization
... genetic characteristics, such as the allelic composition of a particular locus or set of loci (i.e. identity of genotypes), their frequencies (i.e. relative abundance of genotypes), or by one of many metrics derived from the above parameters, such as percent polymorphic loci, mean number of alleles ...
... genetic characteristics, such as the allelic composition of a particular locus or set of loci (i.e. identity of genotypes), their frequencies (i.e. relative abundance of genotypes), or by one of many metrics derived from the above parameters, such as percent polymorphic loci, mean number of alleles ...
Appendix A1: EPBC Assessment of Impact Significance on Listed EEC
... While the proposed action would remove a portion of the Brigalow communities on site, these areas are currently highly disturbed due primarily to invasion by Buffel Grass which has contributed to the Endangered status of Brigalow as this species invades the understorey, outcompetes and suppresses Br ...
... While the proposed action would remove a portion of the Brigalow communities on site, these areas are currently highly disturbed due primarily to invasion by Buffel Grass which has contributed to the Endangered status of Brigalow as this species invades the understorey, outcompetes and suppresses Br ...
interactive effects of predation and dispersal on
... bance history or stochastic extinction (Tonn and Magnuson 1982, Schoener 1989, Holt 1993, 1997, Werner and McPeek 1994, Schneider and Frost 1996, McPeek 1998). The presence of habitats with heterogeneous predator communities can promote regional coexistence among species at lower trophic levels that ...
... bance history or stochastic extinction (Tonn and Magnuson 1982, Schoener 1989, Holt 1993, 1997, Werner and McPeek 1994, Schneider and Frost 1996, McPeek 1998). The presence of habitats with heterogeneous predator communities can promote regional coexistence among species at lower trophic levels that ...
a.16 western spadefoot toad - Butte Regional Conservation Plan
... The western spadefoot toad is primarily a terrestrial amphibian that enters the water mainly for reproduction. This species becomes active following warm rains occurring in the winter and spring. The toads emerge from burrows constructed in loose soil that are at least 1 meter (3 feet) deep (Stebbin ...
... The western spadefoot toad is primarily a terrestrial amphibian that enters the water mainly for reproduction. This species becomes active following warm rains occurring in the winter and spring. The toads emerge from burrows constructed in loose soil that are at least 1 meter (3 feet) deep (Stebbin ...
vascular flora of drainage ditches in forest areas of the polesie
... time numerous studies have been undertaken and carried out, designed to get to know better the natural values of this area. Nevertheless, there are still numerous ecosystems and habitats which have not been fully investigated, and the knowledge of their plant cover is only superficial or approximate ...
... time numerous studies have been undertaken and carried out, designed to get to know better the natural values of this area. Nevertheless, there are still numerous ecosystems and habitats which have not been fully investigated, and the knowledge of their plant cover is only superficial or approximate ...
Shrublands habitat profile in the NH Wildlife Action Plan
... (Bergen et al. 2002). Aerial photographs can be used, but would be time consuming and cost prohibitive if done for a large area (Dan Sundquist, SPNHF, personal communication). 1.9 Distribution Research A better means of mapping shrubland habitats is needed to assess the abundance and distribution of ...
... (Bergen et al. 2002). Aerial photographs can be used, but would be time consuming and cost prohibitive if done for a large area (Dan Sundquist, SPNHF, personal communication). 1.9 Distribution Research A better means of mapping shrubland habitats is needed to assess the abundance and distribution of ...
Biogeography and Zoogeography
... Categories of Biogeography • Historical biogeography – emphasizes the study of changes in species ranges that have taken place over evolutionay time. ...
... Categories of Biogeography • Historical biogeography – emphasizes the study of changes in species ranges that have taken place over evolutionay time. ...
the role of competition in structuring ant communities: a review
... Understanding the mechanisms that determine local patterns of diversity is among the primary goals of ecology. Among these mechanisms, competition is mentioned as the regulatory factor structuring biological communities, despite the fact that the concept is controversial in ecology. Myrmecologists, ...
... Understanding the mechanisms that determine local patterns of diversity is among the primary goals of ecology. Among these mechanisms, competition is mentioned as the regulatory factor structuring biological communities, despite the fact that the concept is controversial in ecology. Myrmecologists, ...
Species Coexistence and Pathogens with
... Interspecific transmission rates (b12, b21) were varied independently, over a range from 0.01 to 0.5, in 0.01 intervals. For simplicity, we assume that both hosts contribute equally to the total host population and that population carrying capacity of the two populations are equal and independent. E ...
... Interspecific transmission rates (b12, b21) were varied independently, over a range from 0.01 to 0.5, in 0.01 intervals. For simplicity, we assume that both hosts contribute equally to the total host population and that population carrying capacity of the two populations are equal and independent. E ...
File
... Look at the following figure, which shows a partial Chesapeake Bay food web. If sea nettles disappeared, ...
... Look at the following figure, which shows a partial Chesapeake Bay food web. If sea nettles disappeared, ...
Experimental Manipulation of Grassland Plant Diversity Induces
... richness while others showed negative or no response. More recently, Haddad et al. [5] identified different mechanisms for herbivores and carnivores driving the positive relationship between consumer richness and plant species richness. Scherber et al. [6] found higher species richness and abundance ...
... richness while others showed negative or no response. More recently, Haddad et al. [5] identified different mechanisms for herbivores and carnivores driving the positive relationship between consumer richness and plant species richness. Scherber et al. [6] found higher species richness and abundance ...
metacommunity influences on community richness at multiple spatial
... affected species richness at different spatial and temporal scales. I examined three scales of dispersal. In the first, organisms have global dispersal to all other communities; in the second, organisms are restricted to local dispersal only; and in the third, an intermediatedispersal scale is examin ...
... affected species richness at different spatial and temporal scales. I examined three scales of dispersal. In the first, organisms have global dispersal to all other communities; in the second, organisms are restricted to local dispersal only; and in the third, an intermediatedispersal scale is examin ...
Community Ecology BSC 405
... the hypothesis of competition – competition it is often asymmetrical – competition is common for plants & marine systems – HSS hypothesis not well supported ...
... the hypothesis of competition – competition it is often asymmetrical – competition is common for plants & marine systems – HSS hypothesis not well supported ...
Reptiles - Nevada Department of Wildlife
... Gila monsters will forage long distances in search of eggs or young in vertebrate nests, primarily reptle and bird eggs and juvenile mammals including cotontails and mice (Beck 2009). This is the only venomous lizard natve to the U.S. It is most actve from late April through June; actvity rapidly de ...
... Gila monsters will forage long distances in search of eggs or young in vertebrate nests, primarily reptle and bird eggs and juvenile mammals including cotontails and mice (Beck 2009). This is the only venomous lizard natve to the U.S. It is most actve from late April through June; actvity rapidly de ...
A hierarchical framework to investigate epiphyte assemblages
... species interacted with fewer host species than expected by chance. Fine-scale analyses showed that epiphyte species richness on individual trees was lower than null model expectations. Therefore, epiphyte distributions were clumped at both scales, perhaps as a result of dispersal limitations. Scale ...
... species interacted with fewer host species than expected by chance. Fine-scale analyses showed that epiphyte species richness on individual trees was lower than null model expectations. Therefore, epiphyte distributions were clumped at both scales, perhaps as a result of dispersal limitations. Scale ...
Yellow Rail (Coturnicops noveboracensis)
... Population sizes and trends Yellow Rails are not well sampled by standardized bird surveys such as the Breeding Bird Survey, Christmas Bird Count, or Marsh Monitoring Program. Currently, only breeding bird atlas programs and surveys specifically targeting the species offer reliable information on oc ...
... Population sizes and trends Yellow Rails are not well sampled by standardized bird surveys such as the Breeding Bird Survey, Christmas Bird Count, or Marsh Monitoring Program. Currently, only breeding bird atlas programs and surveys specifically targeting the species offer reliable information on oc ...