Global Pollinator Decline: A Literature Review - GRID
... 24 Oldroyd BP (1999) Coevolution while you wait: Varroa jacobsoni, a new parasite of western honeybees. Trends Ecol Evol 14: 312–315. 25 van Baalen M, Beekman M (2006) The costs and benefi ts of genetic heterogeneity in resistance against parasites in social insects. Am Nat 167: 568–577. 26 Evans JD ...
... 24 Oldroyd BP (1999) Coevolution while you wait: Varroa jacobsoni, a new parasite of western honeybees. Trends Ecol Evol 14: 312–315. 25 van Baalen M, Beekman M (2006) The costs and benefi ts of genetic heterogeneity in resistance against parasites in social insects. Am Nat 167: 568–577. 26 Evans JD ...
Night-time conductance in C3 and C4 species: do plants lose water
... unlikely in this system because of generally small leaf sizes and inherently large boundary layer conductances (both at leaf and canopy level). In addition, the species in this study are well coupled to the atmosphere during both the day and night due to wide plant spacing and discontinuous canopies ...
... unlikely in this system because of generally small leaf sizes and inherently large boundary layer conductances (both at leaf and canopy level). In addition, the species in this study are well coupled to the atmosphere during both the day and night due to wide plant spacing and discontinuous canopies ...
Linking feeding ecology and population abundance
... Studies of frugivorous primates similarly indicate the importance of food resources, but suggest that, in addition to food quantity, seasonality is also critical in regulating primate populations. For example, Hanya et al. (2004) examined the effects of both total annual fruit production and the degr ...
... Studies of frugivorous primates similarly indicate the importance of food resources, but suggest that, in addition to food quantity, seasonality is also critical in regulating primate populations. For example, Hanya et al. (2004) examined the effects of both total annual fruit production and the degr ...
The Importance of Wetlands
... Supports 20,000 or more waterbirds and 1% of the individuals in a population of one species or subspecies of waterbird. Criteria based on fish Supports a significant proportion of indigenous fish subspecies, species or families, life-history stages, species interactions and/or populations that a ...
... Supports 20,000 or more waterbirds and 1% of the individuals in a population of one species or subspecies of waterbird. Criteria based on fish Supports a significant proportion of indigenous fish subspecies, species or families, life-history stages, species interactions and/or populations that a ...
do plants lose water at night?
... unlikely in this system because of generally small leaf sizes and inherently large boundary layer conductances (both at leaf and canopy level). In addition, the species in this study are well coupled to the atmosphere during both the day and night due to wide plant spacing and discontinuous canopies ...
... unlikely in this system because of generally small leaf sizes and inherently large boundary layer conductances (both at leaf and canopy level). In addition, the species in this study are well coupled to the atmosphere during both the day and night due to wide plant spacing and discontinuous canopies ...
Module 6 Ecological Principles - Members
... A particularly important feature of Arctic ecology is the influence of environmental gradients. The climatic regime has a strong influence on Arctic species and systems and the microclimate that is so important in ecology is strongly influenced by both small and large changes in the shape or topogra ...
... A particularly important feature of Arctic ecology is the influence of environmental gradients. The climatic regime has a strong influence on Arctic species and systems and the microclimate that is so important in ecology is strongly influenced by both small and large changes in the shape or topogra ...
The Organic Weed Control Rag
... can form seeds. Remove topgrowth of invasive weeds with sweep cultivators, sharp hoes or close mowing, before the weeds propagate underground. Mow fields promptly after crop harvest to interdict weed seed maturation. Avoid bringing seeds of new weeds into the field in seedy mulch hay, uncomposted ma ...
... can form seeds. Remove topgrowth of invasive weeds with sweep cultivators, sharp hoes or close mowing, before the weeds propagate underground. Mow fields promptly after crop harvest to interdict weed seed maturation. Avoid bringing seeds of new weeds into the field in seedy mulch hay, uncomposted ma ...
Using the ESS Maximum Principle to Explore Root
... over an individual’s lifetime. However, since strategies are adaptive parameters, they may change for the species over evolutionary time through natural selection. This process will produce a strategy dynamic (a change in strategy over evolutionary time) which drives a species toward the ESS. The ES ...
... over an individual’s lifetime. However, since strategies are adaptive parameters, they may change for the species over evolutionary time through natural selection. This process will produce a strategy dynamic (a change in strategy over evolutionary time) which drives a species toward the ESS. The ES ...
Observations On Environmental Change in South Africa
... possibilities for improving human wellbeing, taking into account the capacity of ecosystem services to support these improvements. South Africa continues to face crucial social and economic challenges. A set of 12 priority outcomes has been identified for focused attention over the next few years. E ...
... possibilities for improving human wellbeing, taking into account the capacity of ecosystem services to support these improvements. South Africa continues to face crucial social and economic challenges. A set of 12 priority outcomes has been identified for focused attention over the next few years. E ...
Pond Life
... are still, which means that they are not fed by streams or rivers. As a result, ponds may become very shallow when there is a drought. ...
... are still, which means that they are not fed by streams or rivers. As a result, ponds may become very shallow when there is a drought. ...
Factors Determining Forest Diversity and Biomass on a Tropical
... The relationship between species diversity and biomass is also poorly understood, with different views as to whether biomass or productivity controls or is controlled by species diversity [20–22]. However, the relationship has been shown to be unimodal in many systems (i.e. the highest number of spe ...
... The relationship between species diversity and biomass is also poorly understood, with different views as to whether biomass or productivity controls or is controlled by species diversity [20–22]. However, the relationship has been shown to be unimodal in many systems (i.e. the highest number of spe ...
Challenges for grassland science: managing research priorities
... herbivory (above and below ground) and mineral recycling through herbivore ingestion and excretion or through additions of fertilizers and manures. Many such systems contain legumes which contribute to cycling of N by biologically fixing N2. These ecosystems are important for the quality of atmosphe ...
... herbivory (above and below ground) and mineral recycling through herbivore ingestion and excretion or through additions of fertilizers and manures. Many such systems contain legumes which contribute to cycling of N by biologically fixing N2. These ecosystems are important for the quality of atmosphe ...
GEOGRAPHIC VARIATION IN POSITIVE AND NEGATIVE
... In June of 1996, we established 10 4 3 3 m experimental garden plots in each of three vegetation zones at each site. Plots were located within a zone dominated by Juncus roemerianus, at the border between Juncus roemerianus and a mixed species zone called the ...
... In June of 1996, we established 10 4 3 3 m experimental garden plots in each of three vegetation zones at each site. Plots were located within a zone dominated by Juncus roemerianus, at the border between Juncus roemerianus and a mixed species zone called the ...
Section 4 - Chandler Unified School District / Overview
... Competing for Resources • The entire range of conditions where an organism or species could survive is called its fundamental niche. – The conditions are very numerous but they begin to include all the parts of the habitat that the organism could use if it needed to. ...
... Competing for Resources • The entire range of conditions where an organism or species could survive is called its fundamental niche. – The conditions are very numerous but they begin to include all the parts of the habitat that the organism could use if it needed to. ...
Ecology of Ecosystems
... within species and among dierent species. The resources for which organisms compete include organic material from living or previously living organisms, sunlight, and mineral nutrients, which provide the energy for living processes and the matter to make up organisms' physical structures. Other cri ...
... within species and among dierent species. The resources for which organisms compete include organic material from living or previously living organisms, sunlight, and mineral nutrients, which provide the energy for living processes and the matter to make up organisms' physical structures. Other cri ...
Appendices - Lake Eyre Basin
... Weeds/pests; Altered hydrological regimes due to excessive water extraction (can be from irrigation; CSG or other examples); Total grazing pressure – stock, introduced and native herbivores and Tourism. This was done in a random but meaningful way to ensure diversity of background and interest withi ...
... Weeds/pests; Altered hydrological regimes due to excessive water extraction (can be from irrigation; CSG or other examples); Total grazing pressure – stock, introduced and native herbivores and Tourism. This was done in a random but meaningful way to ensure diversity of background and interest withi ...
An empirical model for the prediction of secondary production in
... constant with depth. Only variables with partial efwas sometimes used to convert ash-free dry masses fects significant at the p < 0.001 level were retained, (AFDM) to dry masses without shells. The Brey model and insignificant variables were eliminated using forwas created using AFDM, not simple dry ...
... constant with depth. Only variables with partial efwas sometimes used to convert ash-free dry masses fects significant at the p < 0.001 level were retained, (AFDM) to dry masses without shells. The Brey model and insignificant variables were eliminated using forwas created using AFDM, not simple dry ...
NCCMA 6956 - Algae Fact Sheet
... Blue-Green Algae (Cyanobacteria) -What makes this particular type of algae unique is that it is actually a bacteria that has the ability to photosynthesize. It is one of the most commonly known types of algae, probably due to the toxic conditions some species can create when they bloom. An algal blo ...
... Blue-Green Algae (Cyanobacteria) -What makes this particular type of algae unique is that it is actually a bacteria that has the ability to photosynthesize. It is one of the most commonly known types of algae, probably due to the toxic conditions some species can create when they bloom. An algal blo ...
Ecosystems at Risk
... An ecosystem is defined as a biological community of interacting organisms and their physical environment. ...
... An ecosystem is defined as a biological community of interacting organisms and their physical environment. ...
Ecosystems at Risk
... An ecosystem is defined as a biological community of interacting organisms and their physical environment. ...
... An ecosystem is defined as a biological community of interacting organisms and their physical environment. ...
Niche saturation reveals resource partitioning among consumers
... where species within a grouping are thought, based on a researcherÕs prior knowledge of the system, to be more similar to one another than those outside the group. Then, functional diversity is compared with species richness as a predictor of ecosystem function (e.g. Tilman et al. 1997; Kahmen et al ...
... where species within a grouping are thought, based on a researcherÕs prior knowledge of the system, to be more similar to one another than those outside the group. Then, functional diversity is compared with species richness as a predictor of ecosystem function (e.g. Tilman et al. 1997; Kahmen et al ...
Parallel ecological networks in ecosystems Olff, Han
... Secondly, food web studies have often been too system specific, and we need a more general ‘template’ of functional classification of species along main axes of organization (not only trophic position) in food webs to be able to make comparisons between different ecosystems, and to study the interpl ...
... Secondly, food web studies have often been too system specific, and we need a more general ‘template’ of functional classification of species along main axes of organization (not only trophic position) in food webs to be able to make comparisons between different ecosystems, and to study the interpl ...
Parallel ecological networks in ecosystems
... Secondly, food web studies have often been too system specific, and we need a more general ‘template’ of functional classification of species along main axes of organization (not only trophic position) in food webs to be able to make comparisons between different ecosystems, and to study the interpl ...
... Secondly, food web studies have often been too system specific, and we need a more general ‘template’ of functional classification of species along main axes of organization (not only trophic position) in food webs to be able to make comparisons between different ecosystems, and to study the interpl ...
