A sediment bioturbator bottleneck to seedling recruitment for the seagrass Posidonia australis
نویسندگان
چکیده
منابع مشابه
Effects of sediment sulfides on seagrass Posidonia oceanica meristematic activity
Seagrass meadows rank amongst the most productive ecosystems on Earth, growing along tropical and temperate coasts, where they have important structural and biogeochemical functions (Hemminga & Duarte 2000). Seagrasses are clonal plants, which expand into new areas vegetatively by adding modules produced by the meristems located at the rhizome apices, rendering seagrass demographics and product...
متن کاملEdge Effects along a Seagrass Margin Result in an Increased Grazing Risk on Posidonia australis Transplants
A key issue in habitat restoration are the changes in ecological processes that occur when fragments of habitat are lost, resulting in the persistence of habitat-degraded margins. Margins often create or enhance opportunities for negative plant-herbivore interactions, preventing natural or assisted re-establishment of native vegetation into the degraded area. However, at some distance from the ...
متن کاملBurial Duration and Frequency Influences Resilience of Differing Propagule Types in a Subtidal Seagrass, Posidonia australis
Sedimentation that leads to periodic, and often prolonged, burial events is becoming more common on the world's coastlines as human populations expand and create urbanised marine environments. Different seagrass species react differently to sediment burial but many species in the southern hemisphere are yet to be examined. How seagrasses react to burial has restoration implications. There is a ...
متن کاملPredation on Posidonia australis seeds in seagrass habitats of Rottnest Island, Western Australia: patterns and predators
Seed predation is an important process governing the dynamics of many plant populations. We assessed seed mortality due to predation in the seagrass Posidonia australis by identifying predators and quantifying predation events using underwater video cameras, laboratory and field observations, and field tethering experiments in shallow-water habitats off Rottnest Island, Western Australia in 200...
متن کاملRecruitment and Patch Establishment by Seed in the Seagrass Posidonia oceanica: Importance and Conservation Implications
Seagrasses are declining globally, and deeper understanding is needed on the recruitment potential and distribution of new populations for many threatened species to support conservation planning in the face of climate change. Recruitment of Posidonia oceanica, a threatened seagrass endemic to the Mediterranean, has long been considered rare due to infrequent flowering, but mounting evidence de...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2018
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps12550