5 Works

Portfolio effect and asynchrony as drivers of stability in plant-pollinator communities along a gradient of landscape heterogeneity

Amparo Lázaro, Carmelo Gómez-Martínez, Miguel Ángel González-Estévez & Manuel Hidalgo
Understanding how pollination services can be maintained in increasingly anthropogenic landscapes is a current challenge for basic and applied ecology. The stability of plant-pollinator communities might increase in heterogeneous landscapes with a high diversity of species and alternative habitats, both through increased portfolio effect (property of communities to fluctuate less than the sum of its counterparts) and decreased synchrony (coincident changes in species abundance). However, how these drivers of stability (portfolio effect and synchrony) vary...

Investigating population dynamics from parentage analysis in the highly endangered fan mussel Pinna nobilis

Claire Peyran, Emilie Boissin, Titouan Morage, Elisabet Nebot-Colomer, Guillaume Iwankow & Serge Planes
Understanding dispersal patterns is a major focus for conservation biology as it influences local survival and resilience in case of local disturbance, particularly for sessile species. Dispersal can be assessed through parentage analyses by estimating family structure and self-recruitment. This study documents the family structure of a pelagic spawner, Pinna nobilis, which is facing a major crisis that threatens its survival as most of its populations have been decimated by a parasite, Haplosporidium pinnae. In...

Resilience of seagrass populations to thermal stress does not reflect regional differences in ocean climate

Scott Bennett, Teresa Alcovero, Demetris Kletou, Charalampos Antoniou, Jordi Boada, Xavier Buñuel, Lidia Cucala, Gabriel Jorda, Periklis Kleitou, Guillem Roca, Julia Santana-Garcon, Ioannis Savva, Adriana Verges & Nuria Marba
1. The prevalence of local adaptation and phenotypic plasticity among populations is critical to accurately predicting when and where climate change impacts will occur. Currently, comparisons of thermal performance between populations are untested for most marine species or overlooked by models predicting the thermal sensitivity of species to extirpation. 2. Here we compared the ecological response and recovery of seagrass populations (Posidonia oceanica) to thermal stress throughout a year-long translocation experiment across a 2800 km...

Thermal performance of seaweeds and seagrasses across a regional climate gradient

Scott Bennett, Nuria Marba, Raquel Vaquer-Sunyer, Gabriel Jordá, Marina Forteza & Guillem Roca
Comparative patterns in thermal performance between populations have fundamental implications for a species thermal sensitivity to warming and extreme events. Despite this, within-species variation in thermal performance is seldom measured. Here we compare thermal performance between-species variation within communities, for two species of seagrass (Posidonia oceanica and Cymodocea nodosa) and two species of seaweed (Padina pavonica and Cystoseira compressa). Experimental populations from four locations spanning approximately 75% of each species global distribution and a 6ºC...

Decoupled dust deposition and ocean productivity in the Antarctic Zone of the Southern Ocean over the past 1.5 million years

Michael E. Weber , Ian Bailey , Sidney R. Hemming , Yasmina M. Martos , Brendan T. Reilly , Thomas A. Ronge , Stefanie Brachfeld , Trevor Williams , Maureen Raymo , Simon T. Belt , Hendrik Vogel , Victoria Peck , Linda Armbrecht , Alix Cage , Fabricio G. Cardillo , Zhiheng Du , Gerson Fauth , Christopher J. Fogwill , Marga Garcia , Marlo Garnsworthy , Anna Glüder , Michelle Guitard , Marcus Gutjahr , Iván Hernández-Almeida , Frida S. Hoem … & Xufeng Zheng
Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report the first high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our deep-ocean records cover the last 1.5 Ma, thus doubling that from Antarctic ice-cores. We find a ≥10-fold increase in dust deposition during glacials and a ≤5-fold...

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  • Spanish Institute of Oceanography
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