Microtopographic Heterogeneity and Floristic Diversity in Experimental Wetland Communities

Vivian‐Smith, Gabrielle

doi:10.2307/2960628

Cited by 304 publications

(186 citation statements)

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“…An increase in the number of habitat types or greater structural complexity in vegetation can provide more resources than a more uniform environment and may therefore support a greater number of species [47]. Heterogeneity is also thought to have a significant influence on the dynamics and structure of ecological communities [48]. However, although traditionally interpreted as local-scale heterogeneity, habitat heterogeneity also can shape diversity at larger spatial scales.…”

Section: Determinants Of Elevational Diversity Patternsmentioning

confidence: 99%

Environmental Drivers of Patterns of Plant Diversity Along a Wide Environmental Gradient in Korean Temperate Forests

Lee

Chun

2016

Forests

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Understanding patterns of biodiversity and their drivers along environmental gradients is one of the central topics in ecology. However, whether diversity patterns along environmental gradients differ among diversity components as well as life forms and what kind of variables control or interact to shape the diversity patterns are poorly known. This study scrutinized the distribution patterns of three plant groups with four diversity indices and evaluated the effects of regional area, topography, topographic heterogeneity, climate, primary productivity, vegetation structure diversity and vegetation type diversity along an extensive elevational gradient on the Baekdudaegan Mountains in South Korea. Different elevational patterns, including hump-shaped, reversed hump-shaped, increasing, multimodal and no relationship, were observed among both the diversity indices and the plant groups. Regional area, habitat heterogeneity and climate were included to explain most of the elevational diversity patterns. In particular, habitat heterogeneity was the most important variable for explaining the patterns of diversity. The results suggest that patterns of elevational diversity may differ not only among plant groups but also among diversity indices and that such patterns are primarily caused by habitat heterogeneity in the Baekdudaegan Mountains because more heterogeneous and diverse habitats can support more coexisting species.

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Section: Determinants Of Elevational Diversity Patternsmentioning

confidence: 99%

Environmental Drivers of Patterns of Plant Diversity Along a Wide Environmental Gradient in Korean Temperate Forests

Lee

Chun

2016

Forests

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“…Turner et al (1997), Fisk et al (1998) e Loreti & Oesterheld (1996) mostram que os processos de ciclagem de nutrientes estão relacionados com variações espaciais de umidade entre as áreas elevadas, que tendem a ser mais secas, e as partes baixas, onde a umidade tende a ser maior. Para Dwyer & Merrian (1981), Vivian-Smith (1997) e Eldridge et al (1991), as variações microtopográficas são responsáveis pela captura de matéria orgânica e sementes, gerando microambientes que determinam a intensidade de ocorrência de microorganismos, germinação, estabelecimento e mortalidade de plântulas.…”

Section: Introductionunclassified

Relação entre distribuição de espécies arbóreas e topografia em um gradiente florestal na Estação Ecológica do Panga (Uberlândia, MG)

Cardoso

Schiavini²

2002

Rev. bras. Bot.

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-(Relationship between tree species distribution and topography in a forest gradient in the Panga Ecological Station (Uberlândia, MG)). This research aimed to characterize the topography and to assess its relationship with the distribution of the 20 most abundant tree species sampled on a forest gradient (gallery, semideciduous forest and "cerradão") in the Ecological Station of Panga, municipality of Uberlândia, Minas Gerais, Brazil. Using a level tube, the differences in topographic levels were measured between points of 211 plots situated in eight transects. The forest gradient occurs on a predominantly convex slope, facing Northeast, with inclination ranging from about 4% on the top to more than 40% on lateritic outcrops at the bottom. The overlay of topographic and species distribution maps showed that species may be or are dependent, tolerant or intolerant to different levels of soil hydric saturation related to variations of topography. Other species showed association to edaphic factors and/or light condition at the forest edges or in gaps.RESUMO -(Relação entre distribuição de espécies vegetais arbóreas e topografia em um gradiente florestal na Estação Ecológica do Panga (Uberlândia, MG)). Objetivou-se caracterizar a topografia da área estudada e avaliar sua relação com a distribuição das 20 principais espécies arbóreas amostradas em um gradiente florestal (galeria, mesófila semidecídua de encosta e cerradão), na Estação Ecológica do Panga, município de Uberlândia, Minas Gerais, Brasil. Utilizando-se mangueira de nível, foram medidos os desníveis entre pontos de 211 parcelas distribuídas em oito transectos. O gradiente florestal situase sobre uma vertente predominantemente convexa, voltada para Nordeste, com inclinação de cerca de 4% no topo até mais de 40% sobre rochas na base da formação. A sobreposição de mapas (distribuição das espécies e topográfico) mostrou que algumas das espécies são influenciadas positiva ou negativamente às variações de umidade do solo ocasionadas pela topografia ocorrentes na mata de galeria, enquanto que outras mostram relação com outros fatores edáficos e/ou condições de luminosidade de bordas e clareiras.

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“…For example, an increase in the size and abundance of transient fish over oyster reefs in the Chesapeake Bay has been assumed to be due to an increase in the structural complexity of the habitat (Harding and Mann 2001). Topographic heterogeneity of freshwater wetlands has been implicated as critical to restoration of a variety of wetland species because small variations in elevation can shift hydrologic conditions and biotic responses (Vivian-Smith 1997). In tidal marshes, adding topographic heterogeneity in the form of multiple vegetative zones and mixtures of pools and creeks is believed to enhance restoration of invertebrates and fish (Larkin et al 2008).…”

Section: Relevance To Restorationmentioning

confidence: 99%

Reforming Watershed Restoration: Science in Need of Application and Applications in Need of Science

Palmer

2008

Estuaries and Coasts

196

159

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Coastal and inland waters are continuing to decline in many parts of the world despite major efforts made to restore them. This is due in part to the inadequate role that ecological science has played in shaping restoration efforts. A significant amount of fundamental ecological knowledge dealing with issues such as system dynamics, state changes, context-dependency of ecological response, and diversity is both under-used by managers and practitioners and under-developed by ecologists for use in realworld applications. Some of the science that is being 'used' has not been adequately tested. Thus, restoration ecology as a science and ecological restoration as a practice are in need of reform. I identify five ways in which our ecological knowledge should be influencing restoration to a far greater extent than at present including a need to: shift the focus to restoration of process and identification of the limiting factors instead of structures and single species, add ecological insurance to all projects, identify a probabilistic range of possible outcomes instead of a reference condition, expand the spatial scale of efforts, and apply hierarchical approaches to prioritization. Prominent examples of restoration methods or approaches that are commonly used despite little evidence to support their efficacy are highlighted such as the use of only structural enhancements to restore biodiversity. There are also major gaps in scientific knowledge that are of immediate need to policy makers, managers, and restoration practitioners including: predictive frameworks to guide the restoration of ecological processes, identification of social-ecological feedbacks that constrain ecosystem recovery and data to support decisions of where and how to implement restoration projects to achieve the largest gains. I encourage ecologists to respond to the demand for their scientific input so that restoration can shift from an engineering-driven process to a more sustainable enterprise that fully integrates ecological processes and social science methods.

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Microtopographic Heterogeneity and Floristic Diversity in Experimental Wetland Communities

Cited by 304 publications

References 50 publications

Environmental Drivers of Patterns of Plant Diversity Along a Wide Environmental Gradient in Korean Temperate Forests

Environmental Drivers of Patterns of Plant Diversity Along a Wide Environmental Gradient in Korean Temperate Forests

Relação entre distribuição de espécies arbóreas e topografia em um gradiente florestal na Estação Ecológica do Panga (Uberlândia, MG)

Reforming Watershed Restoration: Science in Need of Application and Applications in Need of Science

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