干旱区生态环境知识资源中心(Arid): Analysis of communities, with an historical reconstruction from a deep submarine seamount in an oligotrophic area (Valencia Seamount, Balearic Basin, Western Mediterranean)

Arid

DOI	10.1016/j.dsr.2024.104325
	Analysis of communities, with an historical reconstruction from a deep submarine seamount in an oligotrophic area (Valencia Seamount, Balearic Basin, Western Mediterranean)
	Cartes, J. E.; Papiol, V.; Santos-Echeandia, J.; Diaz-Vinolas, D.; Serrano, A.; Palomino, D.; Pintado-Patino, C.
通讯作者	Cartes, JE
来源期刊	DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
ISSN	0967-0637
EISSN	1879-0119
出版年	2024
卷号	209
英文摘要	Seamounts can have strong influence on the dynamics and production of waters surrounding them, sometimes creating a kind of oasis effect. To assess to what depths and under what conditions this effect may persist on seamounts, we analysed the fauna and recent history of the Valencia Seamount (VS), a deep, small seamount (summit depth: 1056 m) from an oligotrophic zone of the Mediterranean Sea. The (living) epibenthic fauna of the VS summit (up to 1300 m) was composed of filter feeders, surface deposit feeders and carnivores (63 species), structured in a trophic chain as indicated by the high positive relationship (r 2 0.502) between the delta N 15 and delta C 13 of the fauna analysed. This trophic linearisation (compared with Catalan and NW Mallorca slope sites at similar depths) may optimise the energy flux reaching the seamount, with rather high %TOC (0.93 - 1.19%) and C/N (5.0 - 5.5) in July. The Valencia Seamount can also act as a reservoir zone for fish (grenadiers: Nezumia aequalis , and Hymenocephalus italicus ) and shrimps ( Plesionika martia ), which are distributed at shallower depths on adjacent slopes, where they are exploited. The specimens caught were mainly juveniles, suggesting that these species may rather form pseudopopulations. Tuna and cetaceans were regularly sighted on the surface of VS during a specific period of the year (June - July). Reconstructing the recent history of Valencia Seamount (MC2 sediment core taken at 1151 m in 2021) we evidenced a decline of zooplankton pteropods (primary consumers) since ca . the 1960s (MC2 dating after 210 Pb, metals and microplastic analyses), linked to a decline of Si in sediments suggesting a decrease in primary production due to a decrease in rainfall and river runoff. An increase of vorticity ( omega + values), i.e. of cyclonic gyres, and currents after the 1970s over the summit probably increased resuspension of organic matter, which in turn may enhance zooplankton aggegations at VS summit. We hypothesise that this would explain the parallel increase in mesopelagic myctophids in MC2 (from otolith records). Sediments of the Valencia seamount recorded several historical changes. Reconstruction studies carried out in oceanic areas can therefore help to understand the history and improve the management of fragile systems such as seamounts.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001256092100001
WOS关键词	CANONICAL CORRESPONDENCE-ANALYSIS ; LE-DANOIS BANK ; RESOURCE UTILIZATION ; NORTHEAST ATLANTIC ; CONTINENTAL-SLOPE ; BERYX SPLENDENS ; CANTABRIAN SEA ; DEMERSAL FISH ; BIOLOGY ; TRENDS
WOS类目	Oceanography
WOS研究方向	Oceanography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403283
推荐引用方式 GB/T 7714	Cartes, J. E.,Papiol, V.,Santos-Echeandia, J.,et al. Analysis of communities, with an historical reconstruction from a deep submarine seamount in an oligotrophic area (Valencia Seamount, Balearic Basin, Western Mediterranean)[J],2024,209.
APA	Cartes, J. E..,Papiol, V..,Santos-Echeandia, J..,Diaz-Vinolas, D..,Serrano, A..,...&Pintado-Patino, C..(2024).Analysis of communities, with an historical reconstruction from a deep submarine seamount in an oligotrophic area (Valencia Seamount, Balearic Basin, Western Mediterranean).DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,209.
MLA	Cartes, J. E.,et al."Analysis of communities, with an historical reconstruction from a deep submarine seamount in an oligotrophic area (Valencia Seamount, Balearic Basin, Western Mediterranean)".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 209(2024).