Species resistance and community response to wind disturbance
... 1 Severe winds are the predominant cause of natural disturbance in temperate forests of north-eastern and north-central North America. Conceptual models of the effects of wind disturbance have traditionally focused on the impacts of catastrophic disturbances and have painted a simple picture of how ...
... 1 Severe winds are the predominant cause of natural disturbance in temperate forests of north-eastern and north-central North America. Conceptual models of the effects of wind disturbance have traditionally focused on the impacts of catastrophic disturbances and have painted a simple picture of how ...
Red in tooth and claw: how top predators shape terrestrial ecosystems
... through cascading effects. Their approach elegantly reveals the dynamics of the effects of a top predator as it returns to an ecosystem, and by focussing on productivity gradients they provide a link to classical ecological theory based on energy flows through distinct trophic levels. They also show ...
... through cascading effects. Their approach elegantly reveals the dynamics of the effects of a top predator as it returns to an ecosystem, and by focussing on productivity gradients they provide a link to classical ecological theory based on energy flows through distinct trophic levels. They also show ...
Quino Checkerspot Butterfly - Journal of Research on the Lepidoptera
... red and cream scaling than either of these taxa. E. e. insularis is similar to nominotypical editha in size but differs from that subspecies by greater development of black scaling and greater reduction of the orange/red scaling relative to the cream scaling. There are additional defining larval cha ...
... red and cream scaling than either of these taxa. E. e. insularis is similar to nominotypical editha in size but differs from that subspecies by greater development of black scaling and greater reduction of the orange/red scaling relative to the cream scaling. There are additional defining larval cha ...
Forty years of experiments on aquatic invasive species
... affiliation. We classified very slow-moving bivalves as sessile taxa, and grouped consumers of macroscopic or microscopic primary producers (the latter group includes sediment eaters and detrivores) together to represent herbivores. Third, we evaluated study characteristics related to the attributes ...
... affiliation. We classified very slow-moving bivalves as sessile taxa, and grouped consumers of macroscopic or microscopic primary producers (the latter group includes sediment eaters and detrivores) together to represent herbivores. Third, we evaluated study characteristics related to the attributes ...
Logical depth and biological complexity
... repeats, whereas normal people in this respect have any of several sequences of between 5 and 27 repeats. In other words, there is a threshold effect beyond which the translated proteins are sufficient in number to cause the disease. This cannot be determined by genetics alone, at least for the loca ...
... repeats, whereas normal people in this respect have any of several sequences of between 5 and 27 repeats. In other words, there is a threshold effect beyond which the translated proteins are sufficient in number to cause the disease. This cannot be determined by genetics alone, at least for the loca ...
Worksheet 2
... The lowest position no. of these four numbers is: __________________ The highest position no. of these four numbers is: __________________ These two numbers stretch a region of how many nucleotides? __________________ Record the gi-number for this entry: _______________________________________ What ...
... The lowest position no. of these four numbers is: __________________ The highest position no. of these four numbers is: __________________ These two numbers stretch a region of how many nucleotides? __________________ Record the gi-number for this entry: _______________________________________ What ...
Forty years of experiments on aquatic invasive species
... affiliation. We classified very slow-moving bivalves as sessile taxa, and grouped consumers of macroscopic or microscopic primary producers (the latter group includes sediment eaters and detrivores) together to represent herbivores. Third, we evaluated study characteristics related to the attributes ...
... affiliation. We classified very slow-moving bivalves as sessile taxa, and grouped consumers of macroscopic or microscopic primary producers (the latter group includes sediment eaters and detrivores) together to represent herbivores. Third, we evaluated study characteristics related to the attributes ...
Host ontogeny and the temporal decay of similarity in parasite
... the three fish species were very different, the maximum body length difference, i.e. that between the largest and smallest size classes, differed widely among fish species. To standardize this variable, we converted it to relative length difference, by expressing each body length difference between tw ...
... the three fish species were very different, the maximum body length difference, i.e. that between the largest and smallest size classes, differed widely among fish species. To standardize this variable, we converted it to relative length difference, by expressing each body length difference between tw ...
Conserving European biodiversity in the context of climate
... treeline (known as "spruce krummholz") has grown out into more erect forms with the increase in temperature during the 1990s (Gamache & Payette, 2004) Models used to predict the eventual distribution of communities generally rely on identifying the climate-space occupied by the contemporary communit ...
... treeline (known as "spruce krummholz") has grown out into more erect forms with the increase in temperature during the 1990s (Gamache & Payette, 2004) Models used to predict the eventual distribution of communities generally rely on identifying the climate-space occupied by the contemporary communit ...
Read Paper
... Watson-Crick G.C and A.U pairing, laying out a mechanism for the realization of the degeneracies. An alternative explanation for some of the observed degeneracies comes from the ‘‘two out of three proposal’’ (Lagerkvist 1978), which maintains that only the first two bases of the codon are recognized ...
... Watson-Crick G.C and A.U pairing, laying out a mechanism for the realization of the degeneracies. An alternative explanation for some of the observed degeneracies comes from the ‘‘two out of three proposal’’ (Lagerkvist 1978), which maintains that only the first two bases of the codon are recognized ...
in Jaú National Park, Amazonas, Brazil
... Reynolds 1988). We used Spearman correlation coefficients to determine species affinities. All indexes, calculations and statistical tests, were performed using Systat 5.03 (Anonymous 1990-1993). We used Cluster analysis to examine crocodilian assemblage structure (an uncommon procedure, since croco ...
... Reynolds 1988). We used Spearman correlation coefficients to determine species affinities. All indexes, calculations and statistical tests, were performed using Systat 5.03 (Anonymous 1990-1993). We used Cluster analysis to examine crocodilian assemblage structure (an uncommon procedure, since croco ...
Foliicolous lichens as model organisms to study tropical rainforest
... surprising, sińce they contradict the distinct-preference gradient hypothesis, according to which species responses should distribute evenly along a single, continuous gradient to avoid competition, and no distinct communities should be formed. However, this is only true if all possible expressions ...
... surprising, sińce they contradict the distinct-preference gradient hypothesis, according to which species responses should distribute evenly along a single, continuous gradient to avoid competition, and no distinct communities should be formed. However, this is only true if all possible expressions ...
Species diversity, invasion success, and ecosystem functioning
... What underlies the differences in seasonal phenologies among species that lead to the temporal complementarity illustrated in Fig. 1? Despite differences in growth forms, marine invertebrates on hard substrates seem to compete primarily for space, the likely limiting resource. However, each species ...
... What underlies the differences in seasonal phenologies among species that lead to the temporal complementarity illustrated in Fig. 1? Despite differences in growth forms, marine invertebrates on hard substrates seem to compete primarily for space, the likely limiting resource. However, each species ...
COMMUNITY INVASIBILITY, RECRUITMENT LIMITATION, AND GRASSLAND BIODIVERSITY D T
... strongly recruitment limited in a 4-yr experiment in which seeds of up to 54 species were added to patches of native grassland. Four field seasons after a one-time addition of seed, many added species were still present and reproducing, with plots seeded at the highest rate having species richness t ...
... strongly recruitment limited in a 4-yr experiment in which seeds of up to 54 species were added to patches of native grassland. Four field seasons after a one-time addition of seed, many added species were still present and reproducing, with plots seeded at the highest rate having species richness t ...
silvafennicaartic
... ecosystems (MEA 2005). This creates a challenge for planning any actions or making management decisions that aim at securing or protecting biodiversity. As a complex concept, biodiversity can be measured in a variety of ways (Magurran 2004), and consequently managers need to select which objectives ...
... ecosystems (MEA 2005). This creates a challenge for planning any actions or making management decisions that aim at securing or protecting biodiversity. As a complex concept, biodiversity can be measured in a variety of ways (Magurran 2004), and consequently managers need to select which objectives ...
pdf reprint
... runs the risk of not accurately representing how the imperiled species will respond to restoration. Therefore, experiments using a surrogate species should be, when possible, coupled with additional measures of success that relate directly to the target species such as population counts via detailed ...
... runs the risk of not accurately representing how the imperiled species will respond to restoration. Therefore, experiments using a surrogate species should be, when possible, coupled with additional measures of success that relate directly to the target species such as population counts via detailed ...
abiotic constraints eclipse biotic resistance in
... mechanisms determining community invasibility. Successful invaders must tolerate abiotic conditions and overcome resistance from native species in invaded habitats. Biotic resistance to invasions may reflect the diversity, abundance, or identity of species in a community. Few studies, however, have e ...
... mechanisms determining community invasibility. Successful invaders must tolerate abiotic conditions and overcome resistance from native species in invaded habitats. Biotic resistance to invasions may reflect the diversity, abundance, or identity of species in a community. Few studies, however, have e ...
Cayman`s blue iguanas moves to “endangered” from “critically
... summation of monitored iguana locations. This area may increase slightly in the next decade, but is currently not predicted to reach one km² (using the recommended grid size of 2×2 km for estimating AOO increases the area to 12 km², a figure which is well within the Endangered threshold and very cl ...
... summation of monitored iguana locations. This area may increase slightly in the next decade, but is currently not predicted to reach one km² (using the recommended grid size of 2×2 km for estimating AOO increases the area to 12 km², a figure which is well within the Endangered threshold and very cl ...
THE EFFCT OF DISTANCE FROM EDGE ON THE DENSITY AND
... is a perfect square, it is more likely to have a core than a habitat that has an elongated shape because the range of the ecotone would not cover as much of the square habitat. A phenomenon known as edge effect can be observed in the ecotone. The edge effect is the statistically noticeable increase ...
... is a perfect square, it is more likely to have a core than a habitat that has an elongated shape because the range of the ecotone would not cover as much of the square habitat. A phenomenon known as edge effect can be observed in the ecotone. The edge effect is the statistically noticeable increase ...
File - Mr. Greening`s Science
... 26. Two different species of insect-eating birds feed and nest at different levels in the same evergreen tree. In this way they avoid A) predators ...
... 26. Two different species of insect-eating birds feed and nest at different levels in the same evergreen tree. In this way they avoid A) predators ...
Review of science-based assessments of species vulnerability
... importance of factors that contribute to the vulnerability of species is evaluated and converted to a numerical index, which is summed to produce a final vulnerability index (Table 1). The index can be applied to multiple species in areas on the scale of parks or refuges (NatureServe 2010). Exposure ...
... importance of factors that contribute to the vulnerability of species is evaluated and converted to a numerical index, which is summed to produce a final vulnerability index (Table 1). The index can be applied to multiple species in areas on the scale of parks or refuges (NatureServe 2010). Exposure ...