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... did not draw down chlorophyll a. In multi-species treatments, oysters and clams combined additively to influence chlorophyll a drawdown. Petrolisthes did not affect net filtration when added to the bivalve-only treatments. Addition of the predatory mud crab Panopeus herbstii did not influence oyster ...
... did not draw down chlorophyll a. In multi-species treatments, oysters and clams combined additively to influence chlorophyll a drawdown. Petrolisthes did not affect net filtration when added to the bivalve-only treatments. Addition of the predatory mud crab Panopeus herbstii did not influence oyster ...
Biodiversity of Rangelands - Society For Range Management
... Information is available on many rare vascular plant and vertebrate species and where they are located, but there is a lack of similar data on invertebrate animals, non-vascular plants and microbes. An inventory of these ...
... Information is available on many rare vascular plant and vertebrate species and where they are located, but there is a lack of similar data on invertebrate animals, non-vascular plants and microbes. An inventory of these ...
ABSTRACT Title of Dissertation: ECOLOGICAL DYNAMICS OF MACROLEPIDOPTERA
... host plants, the oviposition preference of female moths and the success of their offspring. Thus, shifts in the composition of caterpillars present on a given host plant might be expected to depend on the vegetation context. Variance in herbivore community composition among individuals of a given ho ...
... host plants, the oviposition preference of female moths and the success of their offspring. Thus, shifts in the composition of caterpillars present on a given host plant might be expected to depend on the vegetation context. Variance in herbivore community composition among individuals of a given ho ...
Korapuki Island restoration plan
... differences between Middle and Korapuki Is are likely to influence the final form of each system. Differences in vegetation composition may also result from variable effects of keystone species such as kereru. Following removal of rats and rabbits, many plant species have recolonised, and there were ...
... differences between Middle and Korapuki Is are likely to influence the final form of each system. Differences in vegetation composition may also result from variable effects of keystone species such as kereru. Following removal of rats and rabbits, many plant species have recolonised, and there were ...
Collapse of the world`s largest herbivores
... All 10 large herbivore species within the families Elephantidae, and conservation of these taxa (10). For example, although highly threatHippopotamidae, Hominidae, and Tapiridae are currently threatened ened, the six large-bodied species in the Suidae family are collectively (Fig. 2). The large herb ...
... All 10 large herbivore species within the families Elephantidae, and conservation of these taxa (10). For example, although highly threatHippopotamidae, Hominidae, and Tapiridae are currently threatened ened, the six large-bodied species in the Suidae family are collectively (Fig. 2). The large herb ...
The Global Invasive Species Programme
... knowledge correct at the time of publication, but GISP cannot be held responsible for any incorrect information published. It should be noted that the opinions expressed in this publication do not necessarily reflect those of GISP or its member organisations. ...
... knowledge correct at the time of publication, but GISP cannot be held responsible for any incorrect information published. It should be noted that the opinions expressed in this publication do not necessarily reflect those of GISP or its member organisations. ...
4.4 biological resources
... Federal Endangered Species Act (FESA). The FESA was promulgated to protect any species of plant or animal that is endangered or threatened with extinction. Section 9 of the FESA prohibits “take” of federally threatened or endangered wildlife. Take, as defined under the FESA, means to harass, harm, p ...
... Federal Endangered Species Act (FESA). The FESA was promulgated to protect any species of plant or animal that is endangered or threatened with extinction. Section 9 of the FESA prohibits “take” of federally threatened or endangered wildlife. Take, as defined under the FESA, means to harass, harm, p ...
Spatial patterns of weeds along a gradient of landscape complexity
... how spatial patterns of weeds are mediated by agricultural landscape complexity and species life-history attributes. We quantified the spatial distribution of 110 weed species using data collected in ten landscapes in central western France along a gradient of landscape complexity, from structurally ...
... how spatial patterns of weeds are mediated by agricultural landscape complexity and species life-history attributes. We quantified the spatial distribution of 110 weed species using data collected in ten landscapes in central western France along a gradient of landscape complexity, from structurally ...
A patch-dynamic framework for food web metacommunities
... Although empirically compiled food webs display numerous examples of cannibalism, mutual predation and looping, most such cases involve age-structured feeding interactions (e.g. feeding on juveniles by adults of the same or different species (Polis 1991)). We believe that our simplifying assumption ...
... Although empirically compiled food webs display numerous examples of cannibalism, mutual predation and looping, most such cases involve age-structured feeding interactions (e.g. feeding on juveniles by adults of the same or different species (Polis 1991)). We believe that our simplifying assumption ...
Interactions between granivorous and omnivorous ants in a desert
... 1.8 ants/plot on bait/colony on Removal and Control plots while granivores averaged 9.8 and 7.0 ants/plot on bait/colony. Following the initiation of the experiment, the number of granivore colonies decreased on Removal plots by about 40% (20 vs. 33.9 colonies/616 m2) as did granivore worker activit ...
... 1.8 ants/plot on bait/colony on Removal and Control plots while granivores averaged 9.8 and 7.0 ants/plot on bait/colony. Following the initiation of the experiment, the number of granivore colonies decreased on Removal plots by about 40% (20 vs. 33.9 colonies/616 m2) as did granivore worker activit ...
February - Phoenix Zoo
... goes extinct, which would mean approxiresult of human-caused changes in habitat mately 27,000 species are lost per year. As and species distributions. A closer look at an example of a single group of animals, at the ecology of tropical rainforests may help least one third of the total number of know ...
... goes extinct, which would mean approxiresult of human-caused changes in habitat mately 27,000 species are lost per year. As and species distributions. A closer look at an example of a single group of animals, at the ecology of tropical rainforests may help least one third of the total number of know ...
evaluating perennial candidates for domestication
... Similarly, crossing hybrids with either the annual or perennial parent often appears to result in the elimination of many or all of the chromosomes of one species or the other. The situation appears to be very similar to that encountered when trying to transfer genes from Tripsacum to Zea. Harlan an ...
... Similarly, crossing hybrids with either the annual or perennial parent often appears to result in the elimination of many or all of the chromosomes of one species or the other. The situation appears to be very similar to that encountered when trying to transfer genes from Tripsacum to Zea. Harlan an ...
Meso and Mega-herbivores of Balule
... number of days that they are seen on the reserve. In closed systems elephants have a measurable constant impact on the habitat, however in an open system where elephants disperse, the localized effect would be anticipated to be less (Loarie, van Aarde & Pimm, 2009). It is for this reason the WEI tea ...
... number of days that they are seen on the reserve. In closed systems elephants have a measurable constant impact on the habitat, however in an open system where elephants disperse, the localized effect would be anticipated to be less (Loarie, van Aarde & Pimm, 2009). It is for this reason the WEI tea ...
CONCEPTUAL SYNTHESIS IN COMMUNITY ECOLOGY
... basic possible processes that could cause evolutionary change, rather than a theory skewed towards an emphasis on those processes that are actually important in nature. The latter is an empirical rather than theoretical issue. In contrast, long before the existence of ecological theory, patterns in ...
... basic possible processes that could cause evolutionary change, rather than a theory skewed towards an emphasis on those processes that are actually important in nature. The latter is an empirical rather than theoretical issue. In contrast, long before the existence of ecological theory, patterns in ...
Keystone Species - Ask A Biologist
... They were very, very social. Normally, rabbit-like animals are not too social, but these picas were grooming each other much like they were monkeys. They were sitting in contact, they have these six different vocalizations, some of which you heard earlier, which make them communicate with each other ...
... They were very, very social. Normally, rabbit-like animals are not too social, but these picas were grooming each other much like they were monkeys. They were sitting in contact, they have these six different vocalizations, some of which you heard earlier, which make them communicate with each other ...
Temporal variability of forest communities: empirical estimates of
... rare the opposite occurs. The net effect is negative density dependence, which, by definition, leads to stabilisation. The relative strengths of environmental variance and demographic variance in ecological communities, and the extent to which they are damped by stabilising mechanisms, remain poorly ...
... rare the opposite occurs. The net effect is negative density dependence, which, by definition, leads to stabilisation. The relative strengths of environmental variance and demographic variance in ecological communities, and the extent to which they are damped by stabilising mechanisms, remain poorly ...
Saxidomus giganteus - Scholars` Bank
... many gastropod larvae, but the larvae in the two groups can be recognized by shell morphology (i.e. snail-like versus clam-like). In bivalves, the initial shelled-larva is called a D-stage or straight-hinge veliger due to the “D” shaped shell. This initial shell is called a prodissoconch I and is fo ...
... many gastropod larvae, but the larvae in the two groups can be recognized by shell morphology (i.e. snail-like versus clam-like). In bivalves, the initial shelled-larva is called a D-stage or straight-hinge veliger due to the “D” shaped shell. This initial shell is called a prodissoconch I and is fo ...
review - Jordi Bascompte
... for example, that the per capita effect of one species on another is a function of their overlap in the use of resources along a common niche axis31. ...
... for example, that the per capita effect of one species on another is a function of their overlap in the use of resources along a common niche axis31. ...
conceptual synthesis in community ecology
... The perspective that synthesis in community ecology can be achieved by organizing processes into the four categories of selection, drift, speciation, and dispersal, flows directly out of a sequence of conceptual developments in community ecology over the last half century. In the 1950s and 60s, G. E ...
... The perspective that synthesis in community ecology can be achieved by organizing processes into the four categories of selection, drift, speciation, and dispersal, flows directly out of a sequence of conceptual developments in community ecology over the last half century. In the 1950s and 60s, G. E ...
use intensity affects orthopteran communities
... diversity, leading to more species being losers than winners within the community, that is, more species predominantly occur at low-intensity grasslands. ...
... diversity, leading to more species being losers than winners within the community, that is, more species predominantly occur at low-intensity grasslands. ...
THE IMPORTANCE OF ORGANIC DETRITUS IN LOTIC
... But not all fungal species are palatable to animals, and some leaf species such as beech and conifer needles are extremely unpalatable (Barlocher & Kendrick 1973a,b; Willoughby & Sutcliffe 1976). However, there is evidence that even unpalatable leaf species can be rendered palatable if they are colo ...
... But not all fungal species are palatable to animals, and some leaf species such as beech and conifer needles are extremely unpalatable (Barlocher & Kendrick 1973a,b; Willoughby & Sutcliffe 1976). However, there is evidence that even unpalatable leaf species can be rendered palatable if they are colo ...
Studies and reconstructions of dire wolf (Canis dirus) and Grey wolf
... than a raccoon, which is probably a good ecological model for some borophagines at a time when procyonids had yet to diversify. After some transitional forms in the early Miocene (Hemingfordian), such as Cormocyon and Desmocyon, borophagines achieved their maximum ecological and numerical (i.e. spec ...
... than a raccoon, which is probably a good ecological model for some borophagines at a time when procyonids had yet to diversify. After some transitional forms in the early Miocene (Hemingfordian), such as Cormocyon and Desmocyon, borophagines achieved their maximum ecological and numerical (i.e. spec ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.