![]() Within the rocky intertidal ecosystem, studies have investigated the effects of foundation species on community structure and some resource fluxes however, how intertidal foundation species loss will affect multiple facets of ecosystem functioning in concert remains unknown. 2018.įoundation species, which help maintain habitat and ecosystem functioning, are declining due to anthropogenic impacts. The loss of Mytilus or Phyllospadix species could have both direct (loss of food and habitat) and indirect (altered biogeochemistry and thermal environment) effects on ecosystem functioning (Pfister 2007, Bracken et al. Phyllospadix spp., as primary producers, take up nutrients (Terrados & Williams 1997), modulate pH and DO over diel cycles (Duarte & Chiscano 1999, decrease temperature (Shelton 2010), and increase net ecosystem production (NEP), which increases pH, making the environment more favorable for calcification (Pfister 2007, Bracken et al. 2020, decreases temperature within mussel beds (Stephens & Bertness 1991), and maintains net ecosystem calcification (NEC) as a dominant calcifier in the intertidal (Bracken & Nielsen 2004, Pfister 2007, Pfister & Altabet 2019. californianus recycles nutrients and promotes primary productivity through increased nutrient availability (Bracken & Nielsen 2004, Pfister 2007, Pfister & Altabet 2019, decreases pH and dissolved oxygen (DO) through respiration, Ninokawa et al.
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