Habitat vs. dispersal constraints on bryophyte diversity in the Mojave Desert, USA

Smith, Robert J.; Stark, Lloyd R.

doi:10.1016/j.jaridenv.2013.11.011

Cited by 30 publications

(25 citation statements)

References 31 publications

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“…These findings agree with the observations of local dispersal limitation in deserts (Smith and Stark, 2014), bogs (Andersen et al, 2011), forests (Löbel et al, 2006), and land (Chen et al, 2015) bryophyte communities. However, spatial variables measured are notably not equal to the dispersal capabilities of species.…”

Section: Discussionsupporting

confidence: 91%

Stand Structure and Substrate Diversity as Two Major Drivers for Bryophyte Distribution in a Temperate Montane Ecosystem

Chen

Niu

et al. 2017

Front. Plant Sci.

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Elucidating the major drivers of bryophyte distribution is the first step to protecting bryophyte diversity. Topography, forest, substrates (ground, tree trunks, roots, rocks, and rotten wood), and spatial factor, which factors are the major drivers of bryophyte distribution? In this study, 53 plots were set in 400 m2 along the elevation gradient in Xiaoqinling, China. All bryophytes in the plots were collected and identified. Regression analysis was used to examine the relationship between bryophyte and substrate diversity. We compared the patterns of overall bryophyte diversity and diversity of bryophytes found on the ground, tree, and rock along elevational gradients. Canonical correspondence analysis was applied to relate species composition to selected environmental variables. The importance of topography, forest, substrates, and spatial factors was determined by variance partitioning. A total of 1378 bryophyte specimens were collected, and 240 species were identified. Bryophyte diversity was closely related to substrate diversity. The overall bryophyte diversity significantly increased with elevation; however, the response varied among ground, tree, and rock bryophytes. Tree diversity and herb layer were considered important environmental factors in determining bryophyte distribution. Species abundance was best explained by stand structure (17%), and species diversity was best explained by stand structure (35%) and substrate (40%). Results directly indicated that substrate diversity can improve bryophyte species diversity. The effects of micro-habitat formed by stand structure and substrate diversity were higher than those of spatial processes and topography factors on bryophyte distribution. This study proved that the determinant factors influencing bryophyte diversity reflect the trends in recent forest management, providing a real opportunity to improve forest biodiversity conservation.

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Section: Discussionsupporting

confidence: 91%

Stand Structure and Substrate Diversity as Two Major Drivers for Bryophyte Distribution in a Temperate Montane Ecosystem

Chen

Niu

et al. 2017

Front. Plant Sci.

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“…In dry forests, such as the Caatinga, insolation and water scarcity modulate the composition of plant communities (MORO et al, 2016), which is especially true for bryophytes, a group of avascular plants that regulate their water content according to the moisture saturation of the environment (i.e., poikilohydry -PÉREZ et al, 2011). In spite of this, bryophytes have been found as representatively composing assemblages in dry forests (e.g., SÁ, 1994;FRAHM, 1996;GERMANO, 2013;VALENTE et al, 2013;SMITH;STARK 2014). This is especially true to mosses, the structurally more complex plants among phyla of bryophytes plants (GLIME, 2017a).…”

Section: Introductionmentioning

confidence: 99%

Impactos Do Projeto De Transposição Do São Francisco Para a Agricultura Irrigada

Sousa¹,

Correia²,

Donato³

2019

As Regiões Semiáridas E Suas Especificidades 3

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Regiões áridas-Brasil. I. Zuffo, Alan Mario. II. Série. CDD 333.7369 Elaborado por Maurício Amormino Júnior-CRB6/2422 O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. 2019 Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais. www.atenaeditora.com.br APRESENTAÇÃO A obra "As Regiões Semiáridas e suas Especificidades" aborda uma série de livros de publicação da Atena Editora, em seu III volume, apresenta, em seus 23 capítulos, com conhecimentos tecnológicos das regiões semiáridas e suas especificidades. As Ciências estão globalizadas, englobam, atualmente, diversos campos em termos de pesquisas tecnológicas. O semiárido brasileiro tem característica peculiares, alimentares, culturais, edafoclimáticas, étnicos, entre outros. Tais, diversidades culminam no avanço tecnológico, nas áreas de Agronomia, Engenharia Florestal,

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“…Not all species are able to disperse successfully over long distances, and some species distributed across vast areas can be affected by natural barriers. Taxa with larger spores or whose propagules are gemmae or fragments of stems and leaves do not have so‐called ‘infinite gene flow’ between populations (Smith & Stark ; Soubeyrand et al . ; Kyrkjeeide et al .…”

Section: Introductionmentioning

confidence: 99%

“…; Zhang et al . ; Smith & Stark ). Although many studies have found that genetic diversity is similar in asexually and sexually reproducing populations, there are few studies on patterns of reproduction of bryophytes in regions where asexual reproduction is predominant.…”

Section: Introductionmentioning

confidence: 99%

Dispersal and genetic differentiation of Syntrichia caninervis populations across different desert regions in China

Yin

Zhang

et al. 2019

Plant Biol J

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The moss Syntrichia caninervis is widely distributed in cool temperate and cold deserts where environmental pressures create a dependence on asexual reproduction (fragment reproduction). However, when compared to sporophyte-producing mosses, there is a lack of evidence to support the capacity of drought-tolerant mosses that predominantly fragment and produce protonema to disperse over long distances.• We used 20 microsatellite loci to study genetic variation and structure in six populations (five natural populations and one population from a regeneration site) in three contrasting and widely separated regions of China.• Predominantly asexually reproducing populations of S. caninervis are mainly dependent on short-distance dispersal. Long-distance dispersal of S. caninervis propagules across the region is difficult. Establishment of populations with dominant asexual reproduction will eventually result in genetic differentiation.Plant Biology 21 (2019) 706-714

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Habitat vs. dispersal constraints on bryophyte diversity in the Mojave Desert, USA

Cited by 30 publications

References 31 publications

Stand Structure and Substrate Diversity as Two Major Drivers for Bryophyte Distribution in a Temperate Montane Ecosystem

Stand Structure and Substrate Diversity as Two Major Drivers for Bryophyte Distribution in a Temperate Montane Ecosystem

Impactos Do Projeto De Transposição Do São Francisco Para a Agricultura Irrigada

Dispersal and genetic differentiation of Syntrichia caninervis populations across different desert regions in China

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