Stasis or kinesis? Hidden dynamics of a rocky intertidal macrophyte mosaic revealed by a spatially explicit approach

Menge, Bruce A.; Allison, Gary W.; Blanchette, Carol A.; Farrell, Terence M.; Olson, Annette M.; Turner, Teresa; Tamelen, Peter van

doi:10.1016/j.jembe.2004.09.015

Cited by 38 publications

(53 citation statements)

References 57 publications

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“…Uma costa mais aberta está sujeita a um batimento mais forte de ondas em relação a uma área mais abrigada. A influência das ondas na estrutura da comunidade entremarés tem sido abordada considerando mudanças na composição da comunidade (LEWIS 1964), ampliação da zona entremarés (LEWIS 1964, UNDERWOOD 1981, riqueza e diversidade de espécies (UNDERWOOD 1981, THOMAS 1985, BOAVENTURA et al 2002, ARAÚJO et al 2005, dinâmica das "manchas" de organismos (MENGE et al 2005) e na influência relativa sobre a predação e competição (GOOD 2004).…”

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Zonação de comunidade bêntica do entremarés em molhes sob diferente hidrodinamismo na costa norte do estado do Rio de Janeiro, Brasil

Masi

Zalmon

2008

Rev. Bras. Zool.

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O presente estudo pretende comparar a distribuição vertical da comunidade bêntica na zona entremarés em dois locais compostos por matacões graníticos caracterizados por hidrodinâmica distinta, reflexo da diferença na orientação dos molhes nas praias do Farol de São Tomé (Píer) e na Barra do Furado (Barra), norte do Estado do Rio de Janeiro. Quadrados de 400 cm² foram sobrepostos ao longo de três perfis verticais de ambos os sítios e amostrados através do método de fotoquadrats, desde o nível 0,2 m da maré até o limite superior de Littorina spp. O limite superior dos organismos marinhos foi ampliado na Barra (3,8 m) em relação ao Píer (2,2 m). Quanto à composição taxonômica, nove espécies foram comuns. Chaetomorpha sp., Chondracanthus teedii (Mertens ex Roth) Fredericq e Grateloupia sp. foram exclusivas na Barra, enquanto Tetraclita stalactifera (Lamarck, 1818), Fissurella clench, Gracilaria domingensis (Kützing) Sonder ex Dickie e Hypnea musciformis (Wulfen in Jacqu.) Lamouroux ocorreram somente no Píer. Em ambos os locais, a riqueza e a diversidade de espécies foram superiores nos quadrados intermediários. Os maiores valores foram registrados na Barra. As maiores diferenças nos agrupamentos entre faixas equivalentes de locais distintos ocorreram na faixa eulitorânea superior, seguida pela faixa eulitorânea inferior e franja sublitorânea. Apenas a orla litorânea não revelou diferença significativa entre os locais, mas uma maior extensão desta franja e da faixa eulitorânea superior era bastante evidente. As demais faixas na Barra do Furado foram caracterizadas em grande parte por espécies típicas de ambientes mais expostos como Chaetomorpha sp. na faixa eulitorânea superior e Perna perna (Linnaeus, 1758) na eulitorânea inferior, além de C. teedii e Ulva fasciata Delile, 1813 na franja sublitorânea. No Píer, as diferentes faixas apresentavam distribuição eqüitativa, refletindo um ambiente menos estressante. As diferenças observadas na distribuição vertical dos organismos bênticos, principalmente na extensão das faixas superiores, evidenciam condições de exposição a ondas variáveis.

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Zonação de comunidade bêntica do entremarés em molhes sob diferente hidrodinamismo na costa norte do estado do Rio de Janeiro, Brasil

Masi

Zalmon

2008

Rev. Bras. Zool.

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“…Thus, it is impossible to predict the future trajectory of the community because the differences will increase with time based on the complexity of the stochastic and deterministic factors involved. The formation of distinct associations and the increase in the variability among sampling units are reflected in divergent successional trajectories, showing a patchy distribution that is usually found in natural subtidal rocky communities, where several environmental factors are responsible for generating and maintaining the mosaic pattern (MENGE et al, 2005). Therefore, the classic model of orderly and directional succession (sensu CLEMENTS, 1916;MARGALEF, 1963;ODUM, 1969) in which assemblage variability declines over time is rejected in favour of the hypothesis of multiple stable points (sensu SUTHERLAND, 1978).…”

Section: Discussionmentioning

confidence: 99%

Successional trajectory of the fouling community on a tropical upwelling ecosystem in southeast Rio de Janeiro, Brazil

2015

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The present study describes the successional trajectory of the fouling community in the upwelling region of Cabo Frio in southeastern Rio de Janeiro, Brazil. For 12 months, five PVC panels were sampled monthly by underwater photography to record the percent cover of fouling organisms, which allowed for the evaluation of the successional process through functional groups. The variability in the composition of the fouling community increased throughout the successional trajectory, creating a mosaic pattern. The identification of two associations after a year of observation, with one characterized by filamentous algae, Hydrozoa and Cirripedia and another mainly by articulated calcareous algae, shows that divergent trajectories can be observed even under the same environmental conditions. As an important seasonal factor of the local oceanographic characteristics, the upwelling events allowed for an environmental heterogeneity, and rejecting the classic orderly and directional succession model.

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“…Whether patterns in recruitment of fishes that we observed here are due to habitat selection or differential mortality of recruits between disturbed and unmanipulated habitats cannot be ascertained because we quantified recruitment weeks to months after settlement occurred. Disturbance events that impact surfgrass beds and the subsequent recovery of those beds have been studied only at small scales in intertidal zones (Dethier 1984, Menge et al 2005. Here, habitat disturbance appears to be much more detrimental for recruit than older fishes, likely a result of their stronger and more complex habitat requirements.…”

Section: Responses Of Fishes To Disturbancementioning

confidence: 99%

“…predominate (Williams 1995, Holbrook et al 2000, Bull et al 2004, Menge et al 2005. Surfgrass communities generally have been studied intertidally (Dethier 1984, Turner & Lucas 1985, Holbrook et al 2000, Menge et al 2005) and, to our knowledge, only one study has documented the fauna associated with surfgrass beds subtidally (conspicuous, non-cryptic fishes; DeMartini 1981). What has not been described, however, is a measure of assemblage structure and the specific relationships between habitat attributes and the abundance of fishes.…”

Section: Introductionmentioning

confidence: 99%

“…Surfgrasses are subject to high wave energy from storms and large swells (Holbrook et al 2002b, Bull et al 2004) that may result in their removal; in some instances, much of an entire bed may be lost (e.g. Bull et al 2004, Menge et al 2005. Sources of anthropogenic disturbance include offshore oil production (Exxon Company USA 1993) and possibly sedimentation from coastal development.…”

Section: Introductionmentioning

confidence: 99%

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Fish–habitat associations and the role of disturbance in surfgrass beds

Galst¹,

Anderson²

2008

Mar. Ecol. Prog. Ser.

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Although there are many studies of fauna associated with seagrass beds in sheltered embayments and estuaries, few have explored such associations in open coastal environments. We determined species richness and documented recruitment and the relative abundance of older life stages of conspicuous, non-cryptic fishes in subtidal surfgrass Phyllospadix torreyi beds in San Diego County, California, USA. Using underwater visual surveys, we explored the relationships between several habitat attributes and the densities of fishes. We then tested experimentally the effects of disturbance (removal of surfgrass) on the densities of fishes. Standardized to the number of individuals encountered, species richness increased with increasing bed area. Expectedly, the variables that explained variation in the density of fishes were species specific. After removal of surfgrass from one-half of the area of disturbed reefs, densities of recruits generally were significantly higher on the undisturbed versus disturbed halves of the reefs, while the densities of older life stages were unaffected. Recruitment in relation to surfgrass area revealed a significant interaction between unmanipulated and disturbed reefs, with a decreasing trend in density on unmanipulated reefs and an increasing trend on disturbed reefs. Our results indicate that surfgrass beds serve as an important habitat for near-shore fishes, and the loss of surfgrass from disturbance has negative consequences for recruitment success.

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Stasis or kinesis? Hidden dynamics of a rocky intertidal macrophyte mosaic revealed by a spatially explicit approach

Cited by 38 publications

References 57 publications

Zonação de comunidade bêntica do entremarés em molhes sob diferente hidrodinamismo na costa norte do estado do Rio de Janeiro, Brasil

Zonação de comunidade bêntica do entremarés em molhes sob diferente hidrodinamismo na costa norte do estado do Rio de Janeiro, Brasil

Successional trajectory of the fouling community on a tropical upwelling ecosystem in southeast Rio de Janeiro, Brazil

Fish–habitat associations and the role of disturbance in surfgrass beds

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