Do man-made habitats affect spatial patterns of mollusk abundance?

Cacabelos, Eva; Martins, Gustavo M.; Sánchez, Rocío; Busquier, Laura; Mosquera, Rubén; Neto, Ana I.

Publication

Do man-made habitats affect spatial patterns of mollusk abundance?

2014-09Conference object

dc.contributor.author	Cacabelos, Eva
dc.contributor.author	Martins, Gustavo M.
dc.contributor.author	Sánchez, Rocío
dc.contributor.author	Busquier, Laura
dc.contributor.author	Mosquera, Rubén
dc.contributor.author	Neto, Ana I.
dc.date.accessioned	2015-02-16T18:00:52Z
dc.date.available	2015-02-16T18:00:52Z
dc.date.issued	2014-09
dc.description	XVIII Simposio Ibérico de Estudios de Biología Marina (SIEBM), Gijón (Asturias), 2 al 5 de septiembre de 2014.	por
dc.description.abstract	The fragmentation of natural habitats, together with its loss, is considered a major threat to biodiversity. Man-made habitats, e.g., seawalls and coastal defence structures, are a common feature causing the fragmentation on the shoreline of many urbanized coastal areas and will become more widespread in response to rising and stormier seas. Fragmentation can alter functional connectivity of habitats and determine the spatial distribution of organisms, since the movement and dispersal of individuals can be interrupted. However, ecological consequences of coastal defence structures have not been extensively studied and we know little about their effects in marine systems. One of the most important factors affecting the connectivity among fragments or patches is the ability of the organisms to disperse despite potential barriers. Spatial patterns of molluscs with planktonic larvae or direct development (non-planktotrophic larvae) has been compared before, but there is a growing interest to understand the role of the man-made habitats in determining the patterns of spatial abundances of marine organisms. This study was aimed at exploring the role of type of larval development (planktotrophic vs non-planktotrophic) on patterns of spatial variation of gastropods on rocky shores, elucidating the possible responsibility of habitat fragmentation in observed patterns (i.e. seawall presence). Strongly aggregated distribution patterns are supposed to be characteristic of organisms with direct development, while the existence of planktotrophic larvae could allow the homogeneous distribution of organisms with indirect development. We examined the distribution patterns of grazing molluscs with both planktotrophic (the gastropods Tectarius striatus and Melaraphe neritoides) and direct (e.g. Omalogyra atomus or Lasaea adansoni) development in continuous rocky shores, natural patches and fragments. Two natural rocky shores of each type (continuous rocky shores, natural patches and fragments), separated from each other by kms, were sampled. At the mid-intertidal level, the gastropods Tectarius striatus and Melaraphe neritoides were identified and quantified in situ in quadrats randomly deployed on the shore. Randomly replicates of seaweed turfs, composed mostly by articulated coralline algae, were collected in the chosen locations and target gastropods were sorted and quantified in the laboratory. We predict that organisms with planktotrophic development will be less affected by fragmentation because they have the ability to disperse among fragments.	en
dc.description.sponsorship	FCT	por
dc.identifier.citation	Cacabelos E, Martins GM, Sánchez R, Busquier L, Mosquera R & Neto AI (2014). "Do man-made habitats affect patterns of spatial distribution of mollusc?", XVIII Simpósio Ibérico de Estudos de Biologia Marinha, Abstract Book, p. 65, Centro Oceanográfico de Gijón, Gijón, Espanha, 2-5 de Setembro: (Poster communication).	por
dc.identifier.uri	http://hdl.handle.net/10400.3/3327
dc.language.iso	eng	por
dc.peerreviewed	yes	por
dc.relation	Urban Structures: a driver of biodiversity change in coastal ecosystems?
dc.subject	Fragmentation	en
dc.subject	Seawalls	en
dc.subject	Coastal Defence Structures	en
dc.subject	Connectivity	en
dc.subject	Planktotrophic Development	en
dc.title	Do man-made habitats affect spatial patterns of mollusk abundance?	en
dc.type	conference object
dspace.entity.type	Publication
oaire.awardTitle	Urban Structures: a driver of biodiversity change in coastal ecosystems?
oaire.awardURI	info:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FMAR-EST%2F2160%2F2012/PT
oaire.citation.conferencePlace	Gijón, Espanha	por
oaire.citation.endPage	65	por
oaire.citation.startPage	65	por
oaire.citation.title	XVIII Simpósio Ibérico de Estudos de Biologia Marinha 2014	por
oaire.fundingStream	5876-PPCDTI
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.name	Fundação para a Ciência e a Tecnologia
rcaap.rights	openAccess	por
rcaap.type	conferenceObject	por
relation.isProjectOfPublication	973f74d9-755d-4fdd-bb1c-8366c57ce685
relation.isProjectOfPublication.latestForDiscovery	973f74d9-755d-4fdd-bb1c-8366c57ce685