Appendix A: Freshwater Mussels
... Undersized culverts placed at road stream crossings can be problematic in times of high flow or storm conditions, where flooding may result. Road stream crossings are extremely common and can alter habitat conditions, and thus have negative impacts on aquatic life. In addition, dam maintenance often ...
... Undersized culverts placed at road stream crossings can be problematic in times of high flow or storm conditions, where flooding may result. Road stream crossings are extremely common and can alter habitat conditions, and thus have negative impacts on aquatic life. In addition, dam maintenance often ...
1PBIOL - PP8 (Limiting Factors) - youngs-wiki
... Abiotic Limiting Factors Temperature and precipitation are both abiotic factors that can influence where a species lives. For example, cacti thrive in dry conditions. Too much rainfall could destroy their shallow roots by flooding them or causing them to rot in unusually wet soil. ABIOTIC LIMITING F ...
... Abiotic Limiting Factors Temperature and precipitation are both abiotic factors that can influence where a species lives. For example, cacti thrive in dry conditions. Too much rainfall could destroy their shallow roots by flooding them or causing them to rot in unusually wet soil. ABIOTIC LIMITING F ...
Linking Scales in Stream Ecology
... systems linked by processes acting at multiple spatial scales, from the microscopic to the global. They must identify both critical processes and the scale at which those processes are acting. Recognizing and capitalizing on the hierarchical structure of natural systems (e.g., food webs, animal soci ...
... systems linked by processes acting at multiple spatial scales, from the microscopic to the global. They must identify both critical processes and the scale at which those processes are acting. Recognizing and capitalizing on the hierarchical structure of natural systems (e.g., food webs, animal soci ...
Climate mediates the effects of disturbance on ant assemblage structure
... (e.g. fire) or transformation (e.g. establishment of exotic plantations), especially with increasing human pressures in the most biodiverse regions in the world [8]. An additional challenge in considering the structure of local assemblages is that whereas at regional scales diversity data is compose ...
... (e.g. fire) or transformation (e.g. establishment of exotic plantations), especially with increasing human pressures in the most biodiverse regions in the world [8]. An additional challenge in considering the structure of local assemblages is that whereas at regional scales diversity data is compose ...
controls on food webs in gravel-bedded rivers
... grasping appendages with which to dismember prey, so they are gape-limited, consuming only prey that fit into their mouths. Therefore, aquatic food webs are more hierarchically size-structured than terrestrial webs, with larger organisms at higher trophic positions (with the exception of parasites a ...
... grasping appendages with which to dismember prey, so they are gape-limited, consuming only prey that fit into their mouths. Therefore, aquatic food webs are more hierarchically size-structured than terrestrial webs, with larger organisms at higher trophic positions (with the exception of parasites a ...
The acid taste of climate change: 20th century acidification is
... drivers jointly influenced by their dynamics and the legacy of a systems’ history. Negative synergies between emerging climatically extreme events and past environmental impacts are expected to shift ecological communities to alternative stable states or towards hysteretic successional trajectories. ...
... drivers jointly influenced by their dynamics and the legacy of a systems’ history. Negative synergies between emerging climatically extreme events and past environmental impacts are expected to shift ecological communities to alternative stable states or towards hysteretic successional trajectories. ...
Predicting population survival under future climate change: density
... 1. Our understanding of the interplay between density dependence, climatic perturbations, and conservation practices on the dynamics of small populations is still limited. This can result in uninformed strategies that put endangered populations at risk. Moreover, the data available for a large numbe ...
... 1. Our understanding of the interplay between density dependence, climatic perturbations, and conservation practices on the dynamics of small populations is still limited. This can result in uninformed strategies that put endangered populations at risk. Moreover, the data available for a large numbe ...
INTERMEDIATE DISTURBANCE AND ITS RELATIONSHIP TO
... whether or not there are mechanisms in lakes that can create patches at appropriate spatial and temporal scales. In addition, Wilson (1994) poses the more general question of whether or not the intermediate disturbance hypothesis applies to within- or between-patch scales. The first two issues refle ...
... whether or not there are mechanisms in lakes that can create patches at appropriate spatial and temporal scales. In addition, Wilson (1994) poses the more general question of whether or not the intermediate disturbance hypothesis applies to within- or between-patch scales. The first two issues refle ...
The intermediate disturbance hypothesis should be
... empirical studies against the IDH. For instance, it is possible some empirical studies failed to support the IDH because they failed to sample a sufficient range of disturbance frequencies or intensities. But methodological artifacts can cut both ways. For instance, published empirical studies might ...
... empirical studies against the IDH. For instance, it is possible some empirical studies failed to support the IDH because they failed to sample a sufficient range of disturbance frequencies or intensities. But methodological artifacts can cut both ways. For instance, published empirical studies might ...
... Pen-raised and released birds are unable to adapt to the new environment, but do contribute to the depletion of available foods, cover, and suitable mates for resident bobwhites. There are many factors contributing to the overall decline of the bobwhite population, but there are some key management ...
Incorporating Plant Mortality and Recruitment Into
... need to be replaced with new individuals more frequently than long-lived individuals. The recruitment process requires production of viable seeds and then the steps outlined in Figure 1, culminating in an established adult. Unfortunately, there is little information on life expectancy of herbaceous ...
... need to be replaced with new individuals more frequently than long-lived individuals. The recruitment process requires production of viable seeds and then the steps outlined in Figure 1, culminating in an established adult. Unfortunately, there is little information on life expectancy of herbaceous ...
This article discusses the various hypotheses proposed to explain
... Researchers today have an interest in the same topics of disturbance and diversity explained by Connell’s classic paper. Like Connell, Adjeroud and his colleagues have studied coral reefs, but instead of asking how the diversity is maintained, they study the general effects of disturbance with the c ...
... Researchers today have an interest in the same topics of disturbance and diversity explained by Connell’s classic paper. Like Connell, Adjeroud and his colleagues have studied coral reefs, but instead of asking how the diversity is maintained, they study the general effects of disturbance with the c ...
Lessons for ecology, conservation and society from the Serengeti
... Simon Thirgood and many others ...
... Simon Thirgood and many others ...
Temporal change in hard substrate communities 10-250 m, the Bahamas
... Fine-scale change in hard-substrate community structure was determined through repeat photography of'natural substrates and artificial settling panels over a three year period and along a depth gradient of 10-250 m off Lee Stocking Island, the Bahamas. Indices were developed to address temporal chan ...
... Fine-scale change in hard-substrate community structure was determined through repeat photography of'natural substrates and artificial settling panels over a three year period and along a depth gradient of 10-250 m off Lee Stocking Island, the Bahamas. Indices were developed to address temporal chan ...
Agents of Pattern Formation: Disturbance Regimes
... The key parts of this definition are that disturbances are discrete in time, in contrast to chronic stress or background environmental variability; and that they cause a notable change (a perturbation) in the state of the system. Are disturbances a part of the system itself? Are they "inside" or "o ...
... The key parts of this definition are that disturbances are discrete in time, in contrast to chronic stress or background environmental variability; and that they cause a notable change (a perturbation) in the state of the system. Are disturbances a part of the system itself? Are they "inside" or "o ...
intermediate disturbance hypothesis
... What Padisák is doing here is to change the definition of IDH, making it identical to GCC, and then complaining that the two are the same. IDH and phytoplankton communities There seems to be some vagueness about IDH amongst phytoplankton ecologists. For example, Sommer et al. (1993) explain the oper ...
... What Padisák is doing here is to change the definition of IDH, making it identical to GCC, and then complaining that the two are the same. IDH and phytoplankton communities There seems to be some vagueness about IDH amongst phytoplankton ecologists. For example, Sommer et al. (1993) explain the oper ...
Natural Disasters and Primate Populations: The Effects of a 2
... such as adult and infant mortality rates, birth rates, life spans, migration patterns, home range stability, and population variability over several years (Dunbar, 1980, 1986; Glander, 1980; Isbell, 1990; Richard et al., 1991; Sussman, 1991; Strier, 1993; Wright, 1995; Fedigan and Rose, 1995; Jolly ...
... such as adult and infant mortality rates, birth rates, life spans, migration patterns, home range stability, and population variability over several years (Dunbar, 1980, 1986; Glander, 1980; Isbell, 1990; Richard et al., 1991; Sussman, 1991; Strier, 1993; Wright, 1995; Fedigan and Rose, 1995; Jolly ...
State of California State Water Resources Control Board DIVISION OF WATER RIGHTS
... long-term decline in populations caused by persistently inadequate flows has been exacerbated by the current drought. In addition, migratory species, including Chinook salmon, steelhead, green sturgeon, and Sacramento splittail, benefit from higher river inflows to the Delta. As a result of human wa ...
... long-term decline in populations caused by persistently inadequate flows has been exacerbated by the current drought. In addition, migratory species, including Chinook salmon, steelhead, green sturgeon, and Sacramento splittail, benefit from higher river inflows to the Delta. As a result of human wa ...
Lesson 5 - Abiotic and Biotic Factors
... • BIOTIC FACTORS are living things. It is the way living things interact or relate to one another. Plants, animals and bacteria are all biotic factors. • ABIOTIC FACTORS are non-living physical and chemical components of an ecosystem (e.g., temperature, wind, snow). ABIOTIC FACTORS Each species can ...
... • BIOTIC FACTORS are living things. It is the way living things interact or relate to one another. Plants, animals and bacteria are all biotic factors. • ABIOTIC FACTORS are non-living physical and chemical components of an ecosystem (e.g., temperature, wind, snow). ABIOTIC FACTORS Each species can ...
Landscape Ecology and Natural Disturbances
... entities. This view, referred to in ecology as the “non-equilibrium model,” considers ecosystem structure to be determined by interactions between the long-term forces of ecological succession, fluctuations in climate, and the more immediate effects of natural disturbances. Natural disturbances are d ...
... entities. This view, referred to in ecology as the “non-equilibrium model,” considers ecosystem structure to be determined by interactions between the long-term forces of ecological succession, fluctuations in climate, and the more immediate effects of natural disturbances. Natural disturbances are d ...
- University of East Anglia
... history, susceptibility to perturbation and dispersal ability that were inconsistent ...
... history, susceptibility to perturbation and dispersal ability that were inconsistent ...
This article discusses the various hypotheses proposed to explain
... greatest when the disturbance is intermediate. Most of the studies discussed thus far have been closely if not directly related to Connell’s classic paper and have served as supplements to his original conclusion, but there have also been studies which follow from Connell’s paper yet deviate from hi ...
... greatest when the disturbance is intermediate. Most of the studies discussed thus far have been closely if not directly related to Connell’s classic paper and have served as supplements to his original conclusion, but there have also been studies which follow from Connell’s paper yet deviate from hi ...
PowerPoint Presentation - Patterns of Succession
... • Thus there is a dynamic equilibrium across the landscape ...
... • Thus there is a dynamic equilibrium across the landscape ...
Causes and Consequences of Spatial Heterogeneity
... Ecolog(ists) use(s) the concept of a landscape in two ways. The first, which considers a landscape as a specific area based on human scales, is intuitive: Landscapes are ecological systems that exist at the scale of kilometers and comprise recognizable elements such as forest patches, fields, and he ...
... Ecolog(ists) use(s) the concept of a landscape in two ways. The first, which considers a landscape as a specific area based on human scales, is intuitive: Landscapes are ecological systems that exist at the scale of kilometers and comprise recognizable elements such as forest patches, fields, and he ...