2.17 死水活水多样性, 貌似原文，求确认

亦优

2.17 死水活水多样性, 貌似原文，求确认
根据forevercoco找到的PDF文件，全文共29页，我大致看了一下，后面的内容分的太详细了，摘要的内容就已经涵盖了狗主们说的重点，但是狗主们只说过有3段，没说有多长，我算了一下，摘要共212个字，如果按6个字一行的排版，在35行左右，算是正常的篇幅吧（参考GWD的RC长度），不过摘要没有分段，所以请狗主们确认下是否原文，O(∩_∩)O谢谢

Lentic freshwater habitats in temperate regions exist along a gradient from small ephemeral ponds to large permanent lakes. This environmental continuum is a useful axis for understanding how attributes of individuals ultimately generate structure at the level of the community. Community structure across the gradient is determined by both (a) physical factors, such as pond drying and winter anoxia, that limit the potential breadth of species distributions, and (b) biotic effects mediated by ecological interactions, principally predation, that determine the realized success of species. Fitness tradeoffs associated with a few critical traits of individuals often form the basis for species turnover along the gradient. Among species that inhabit temporary ponds, distributions are often constrained because traits that enhance developmental rate and competitive ability also increase susceptibility to predators. In permanent ponds, changes in the composition of major predators over the gradient limit distributions of prey species because traits that reduce mortality risk in one region of the gradient cause increased risk in other regions of the gradient. Integrated across the gradient, these patterns in species success generate distinct patterns in community structure. Additionally, spatial heterogeneity among habitats along the gradient and the fitness tradeoffs created by this heterogeneity may hold important evolutionary implications for habitat specialization and lineage diversification in aquatic taxa.

夏天amy

LZ好辛苦啊 ~ 谢谢哦

camelo777

跪求狗主确认一下~

藜芦

顶顶~~~
狗主们看过来啊~~~

forevercoco

2.17 死水活水多样性, 貌似原文，求确认
根据forevercoco找到的PDF文件，全文共29页，我大致看了一下，后面的内容分的太详细了，摘要的内容就已经涵盖了狗主们说的重点，但是狗主们只说过有3段，没说有多长，我算了一下，摘要共212个字，如果按6个字一行的排版，在35行左右，算是正常的篇幅吧（参考GWD的RC长度），不过摘要没有分段，所以请狗主们确认下是否原文，O(∩_∩)O谢谢

Lentic freshwater habitats in temperate regions exist along a gradient from small ephemeral ponds to large permanent lakes. This environmental continuum is a useful axis for understanding how attributes of individuals ultimately generate structure at the level of the community. Community structure across the gradient is determined by both (a) physical factors, such as pond drying and winter anoxia, that limit the potential breadth of species distributions, and (b) biotic effects mediated by ecological interactions, principally predation, that determine the realized success of species. Fitness tradeoffs associated with a few critical traits of individuals often form the basis for species turnover along the gradient. Among species that inhabit temporary ponds, distributions are often constrained because traits that enhance developmental rate and competitive ability also increase susceptibility to predators. In permanent ponds, changes in the composition of major predators over the gradient limit distributions of prey species because traits that reduce mortality risk in one region of the gradient cause increased risk in other regions of the gradient. Integrated across the gradient, these patterns in species success generate distinct patterns in community structure. Additionally, spatial heterogeneity among habitats along the gradient and the fitness tradeoffs created by this heterogeneity may hold important evolutionary implications for habitat specialization and lineage diversification in aquatic taxa.

-- by 会员 亦优 (2011/6/10 1:30:11)

消息限制字数。。。发这里~~~~
提醒大家这题的狗一定要小心看，因为明显有几个狗之间是互相矛盾的，关于predator多还是少这个问题
Importantly,this constraint prevents colonization by
manykey predators found elsewhere on the gradient because fish and important
predatoryinvertebrates such as dragonfly larvae are highly susceptible to
ponddrying. Temporary pond habitats thus often contain fewer predators than
domore permanent habitats (149, 208). In shallow permanent ponds, physical
stressessuch as low oxygen levels during periods of ice cover can impose
heavymortality on fish (28, 127, 177). Thus well-developed fish communities
areoften restricted to relatively deep permanent habitats

Strongnegative interactions,
througheither predation or competition, may prevent survival of affected populations,
andthus restrict the distribution of these species to a narrow range of
the gradient Temporaryhabitats are characterized by very active and rapidly
developingspecies and few predators (149, 208). Permanent but fishless habitats
havecommunities composed of large predatory invertebrates,

藜芦

2.17 死水活水多样性, 貌似原文，求确认
根据forevercoco找到的PDF文件，全文共29页，我大致看了一下，后面的内容分的太详细了，摘要的内容就已经涵盖了狗主们说的重点，但是狗主们只说过有3段，没说有多长，我算了一下，摘要共212个字，如果按6个字一行的排版，在35行左右，算是正常的篇幅吧（参考GWD的RC长度），不过摘要没有分段，所以请狗主们确认下是否原文，O(∩_∩)O谢谢

Lentic freshwater habitats in temperate regions exist along a gradient from small ephemeral ponds to large permanent lakes. This environmental continuum is a useful axis for understanding how attributes of individuals ultimately generate structure at the level of the community. Community structure across the gradient is determined by both (a) physical factors, such as pond drying and winter anoxia, that limit the potential breadth of species distributions, and (b) biotic effects mediated by ecological interactions, principally predation, that determine the realized success of species. Fitness tradeoffs associated with a few critical traits of individuals often form the basis for species turnover along the gradient. Among species that inhabit temporary ponds, distributions are often constrained because traits that enhance developmental rate and competitive ability also increase susceptibility to predators. In permanent ponds, changes in the composition of major predators over the gradient limit distributions of prey species because traits that reduce mortality risk in one region of the gradient cause increased risk in other regions of the gradient. Integrated across the gradient, these patterns in species success generate distinct patterns in community structure. Additionally, spatial heterogeneity among habitats along the gradient and the fitness tradeoffs created by this heterogeneity may hold important evolutionary implications for habitat specialization and lineage diversification in aquatic taxa.

-- by 会员 亦优 (2011/6/10 1:30:11)

消息限制字数。。。发这里~~~~
提醒大家这题的狗一定要小心看，因为明显有几个狗之间是互相矛盾的，关于predator多还是少这个问题
Importantly,this constraint prevents colonization by
manykey predators found elsewhere on the gradient because fish and important
predatoryinvertebrates such as dragonfly larvae are highly susceptible to
ponddrying. Temporary pond habitats thus often contain fewer predators than
domore permanent habitats (149, 208). In shallow permanent ponds, physical
stressessuch as low oxygen levels during periods of ice cover can impose
heavymortality on fish (28, 127, 177). Thus well-developed fish communities
areoften restricted to relatively deep permanent habitats

Strongnegative interactions,
througheither predation or competition, may prevent survival of affected populations,
andthus restrict the distribution of these species to a narrow range of
the gradient Temporaryhabitats are characterized by very active and rapidly
developingspecies and few predators (149, 208). Permanent but fishless habitats
havecommunities composed of large predatory invertebrates,

-- by 会员 forevercoco (2011/6/10 9:38:17)

多谢LS！

hlbubu

2.17 死水活水多样性, 貌似原文，求确认
根据forevercoco找到的PDF文件，全文共29页，我大致看了一下，后面的内容分的太详细了，摘要的内容就已经涵盖了狗主们说的重点，但是狗主们只说过有3段，没说有多长，我算了一下，摘要共212个字，如果按6个字一行的排版，在35行左右，算是正常的篇幅吧（参考GWD的RC长度），不过摘要没有分段，所以请狗主们确认下是否原文，O(∩_∩)O谢谢

Lentic freshwater habitats in temperate regions exist along a gradient from small ephemeral ponds to large permanent lakes. This environmental continuum is a useful axis for understanding how attributes of individuals ultimately generate structure at the level of the community. Community structure across the gradient is determined by both (a) physical factors, such as pond drying and winter anoxia, that limit the potential breadth of species distributions, and (b) biotic effects mediated by ecological interactions, principally predation, that determine the realized success of species. Fitness tradeoffs associated with a few critical traits of individuals often form the basis for species turnover along the gradient. Among species that inhabit temporary ponds, distributions are often constrained because traits that enhance developmental rate and competitive ability also increase susceptibility to predators. In permanent ponds, changes in the composition of major predators over the gradient limit distributions of prey species because traits that reduce mortality risk in one region of the gradient cause increased risk in other regions of the gradient. Integrated across the gradient, these patterns in species success generate distinct patterns in community structure. Additionally, spatial heterogeneity among habitats along the gradient and the fitness tradeoffs created by this heterogeneity may hold important evolutionary implications for habitat specialization and lineage diversification in aquatic taxa.

-- by 会员 亦优 (2011/6/10 1:30:11)

消息限制字数。。。发这里~~~~
提醒大家这题的狗一定要小心看，因为明显有几个狗之间是互相矛盾的，关于predator多还是少这个问题
Importantly,this constraint prevents colonization by
manykey predators found elsewhere on the gradient because fish and important
predatoryinvertebrates such as dragonfly larvae are highly susceptible to
ponddrying. Temporary pond habitats thus often contain fewer predators than
domore permanent habitats (149, 208). In shallow permanent ponds, physical
stressessuch as low oxygen levels during periods of ice cover can impose
heavymortality on fish (28, 127, 177). Thus well-developed fish communities
areoften restricted to relatively deep permanent habitats

Strongnegative interactions,
througheither predation or competition, may prevent survival of affected populations,
andthus restrict the distribution of these species to a narrow range of
the gradient Temporaryhabitats are characterized by very active and rapidly
developingspecies and few predators (149, 208). Permanent but fishless habitats
havecommunities composed of large predatory invertebrates,

-- by 会员 forevercoco (2011/6/10 9:38:17)

那到底是那种呢？？能说具体点吗？好迷茫 求解释~~

michellesu

恩。。。不是这个文章~~是个5段的 具体讲某个生物t的貌似