Effects of Ulva spp. and seasonal disturbances on the recovery of a temperate rocky intertidal community

2020 ◽  
Author(s):  
Kwon Mo Yang ◽  
Jeong Ha Kim
Keyword(s):  
Rocky Intertidal ◽  
Intertidal Community

scholarly journals Uniform persistence and almost periodic solutions of a nonautonomous patch occupancy model

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Hui Zhou ◽  
Jehad Alzabut ◽  
Shahram Rezapour ◽  
Mohammad Esmael Samei
Keyword(s):  
Differential Inequality ◽  
Almost Periodic Solution ◽  
Rocky Intertidal ◽  
Uniform Persistence ◽  
Almost Periodic ◽  
Patch Occupancy ◽  
Sharp Threshold ◽  
Intertidal Community ◽  
Patch Occupancy Model ◽  
Inequality Techniques

Abstract In this paper, a nonlinear nonautonomous model in a rocky intertidal community is studied. The model is composed of two species in a rocky intertidal community and describes a patch occupancy with global dispersal of propagules and occupy each other by individual organisms. Firstly, we study the uniform persistence of the model via differential inequality techniques. Furthermore, a sharp threshold of global asymptotic stability and the existence of a unique almost periodic solution are derived. To prove the main results, we construct an appropriate Lyapunov function whose conditions are easily verified. The assumptions of the model are reasonable, and the results complement previously known ones. An example with specific values of parameters is included for demonstration of theoretical outcomes.

Climate-Related, Long-Term Faunal Changes in a California Rocky Intertidal Community

Science ◽  
1995 ◽  
Vol 267 (5198) ◽  
pp. 672-675 ◽  
Author(s):  
J. P. Barry ◽  
C. H. Baxter ◽  
R. D. Sagarin ◽  
S. E. Gilman
Keyword(s):  
Rocky Intertidal ◽  
Intertidal Community

Supply-side ecology, barnacle recruitment, and rocky intertidal community dynamics: Do settlement surface and limpet disturbance matter?

2010 ◽  
Vol 392 (1-2) ◽  
pp. 160-175 ◽  
Author(s):  
Bruce A. Menge ◽  
Melissa M. Foley ◽  
Jacque Pamplin ◽  
Gayle Murphy ◽  
Camryn Pennington
Keyword(s):  
Community Dynamics ◽  
Rocky Intertidal ◽  
Supply Side ◽  
Intertidal Community

scholarly journals Coastal oceanography sets the pace of rocky intertidal community dynamics

2003 ◽  
Vol 100 (21) ◽  
pp. 12229-12234 ◽  
Author(s):  
B. A. Menge ◽  
J. Lubchenco ◽  
M. E. S. Bracken ◽  
F. Chan ◽  
M. M. Foley ◽  
...  
Keyword(s):  
Community Dynamics ◽  
Rocky Intertidal ◽  
Coastal Oceanography ◽  
Intertidal Community

scholarly journals Changes in Rocky Intertidal Community Structure During a Marine Heatwave in the Northern Gulf of Alaska

2021 ◽  
Vol 8 ◽  
Author(s):  
Benjamin Weitzman ◽  
Brenda Konar ◽  
Katrin Iken ◽  
Heather Coletti ◽  
Daniel Monson ◽  
...  
Keyword(s):  
Community Structure ◽  
National Park ◽  
Large Scale ◽  
Monitoring Program ◽  
Gulf Of Alaska ◽  
Marine Ecosystems ◽  
Tourism Industry ◽  
Rocky Intertidal ◽  
Intertidal Communities ◽  
Intertidal Community

Marine heatwaves are global phenomena that can have major impacts on the structure and function of coastal ecosystems. By mid-2014, the Pacific Marine Heatwave (PMH) was evident in intertidal waters of the northern Gulf of Alaska and persisted for multiple years. While offshore marine ecosystems are known to respond to these warmer waters, the response of rocky intertidal ecosystems to this warming is unclear. Intertidal communities link terrestrial and marine ecosystems and their resources are important to marine and terrestrial predators and to human communities for food and recreation, while simultaneously supporting a growing coastal tourism industry. Given that current climate change projections suggest increased frequency and duration of marine heatwaves, monitoring and understanding the impacts of heatwaves on intertidal habitats is important. As part of the Gulf Watch Alaska Long-Term Monitoring program, we examined rocky intertidal community structure at 21 sites across four regions spanning 1,200 km of coastline: Western Prince William Sound, Kenai Fjords National Park, Kachemak Bay, and Katmai National Park and Preserve. Sites were monitored annually from 2012 to 2019 at mid and low tidal strata. Before-PMH (2012–2014), community structure differed among regions. We found macroalgal foundation species declined during this period mirroring patterns observed elsewhere for subtidal habitat formers during heatwave events. The region-wide shift from an autotroph-macroalgal dominated rocky intertidal to a heterotroph-filter-feeder dominated state concurrent with the changing environmental conditions associated with a marine heatwave event suggests the PMH had Gulf-wide impacts to the structure of rocky intertidal communities. During/after-PMH (2015–2019), similarities in community structure increased across regions, leading to a greater homogenization of these communities, due to declines in macroalgal cover, driven mostly by a decline in the rockweed, Fucus distichus, and other fleshy red algae in 2015, followed by an increase in barnacle cover in 2016, and an increase in mussel cover in 2017. Strong, large-scale oceanographic events, like the PMH, may override local drivers to similarly influence patterns of intertidal community structure.

scholarly journals DYNAMICS OF A MACROALGAL ROCKY INTERTIDAL COMMUNITY IN THE COLOMBIAN CARIBBEAN

2016 ◽  
Vol 35 ◽  
Author(s):  
Camilo B. García ◽  
Guillermo Díaz Pulido
Keyword(s):  
Interannual Variation ◽  
Spatial Scales ◽  
Dry Season ◽  
Rocky Intertidal ◽  
Intertidal Community ◽  
Macroalgal Cover ◽  
Macroalgal Community ◽  
Strong Disturbance ◽  
Tropical Location

The macroalgal intertidal community at a tropical location (Punta de la Loma, Colombian Caribbean) was monitored at irregular intervals from 1992 to 1995. The highly diverse macroalgal community was relatively invariant in cover, taxa and biomass from small spatial scales (square centimeters). At larger spatial scales (square meters), however, there was a small but definitive seasonal pulse in dominance and composition. Sand intrusions over the rocky intertidal represents a strong disturbance reducing macroalgal cover during the dry season. Interannual variation was also detected. La Punta de la Loma appears to be influenced by the regional upwelling conditions.

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