Presentation October authors, including: Cesar O. Pacherres Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
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1 See discussions, stats, and author profiles for this publication at: Functional analysis of the spatiotemporal distribution of the macrobenthos associated to bathylithological aspects and environmental variables at the Mackellar Inlet, King George I... Presentation October 2017 DOI: /RG CITATIONS 0 READS 94 4 authors, including: Bernabé Moreno Universidad Científica del Sur 19 PUBLICATIONS 39 CITATIONS SEE PROFILE Cesar O. Pacherres Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research 10 PUBLICATIONS 43 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Blue carbon immobilization by kelp forests in Central-Southern Peruvian littoral View project ASCCC - Antarctic Seabed Carbon Capture Change View project All content following this page was uploaded by Bernabé Moreno on 10 October The user has requested enhancement of the downloaded file.
2 FUNCTIONAL ANALYSIS of the SPATIOTEMPORAL DISTRIBUTION of the MACROBENTHOS associated to BATHYLITHOLOGICAL aspects & ENVIRONMENTAL VARIABLES at the Mackellar Inlet, KGI, Antarctica Bernabé Moreno Cesar O. Pacherres Aldo G. Indacochea ᴥ Luis Cerpa Laboratorio de Biología Marina UNIVERSIDAD CIENTÍFICA DEL SUR ᴥ Programa de Geología Marina INSTITUTO GEOLÓGICO, MINERO Y METALÚRGICO
3 INTRODUCTION Antarctic Peninsula Recent Rapid Regional warming in last 50 yrs Ice shelves collapse / Glacier mass loss King George Island Intensively sampled Highly vulnerable, antarctic maritime island Mulvaney et al Nature Δ Ecosystem structure/functioning Δ Biogeographic patterns and thresholds
4 INTRODUCTION Functional Classification TAXONOMIC approach Functional groups Genossenschaften (Root, 1967) Hutchinson (1957) x organism in n dimensions Predictability of faunistic composition Simplified classification scheme: reasonable taxonomic surrogacy by benthic functional groups and habitats (Barnes & Sands, 2017) Blonder, 2014
5 METHODOLOGY STUDY AREA, BIOLOGICAL SAMPLING & PROCESSING A: King George Island B: Mackellar Inlet C: Antarctic Peninsula D: Antarctica ANTAR XVII 2007 XVIII 2008 ANT AR XIX 2010 ANTAR XX 2012 ANTAR XXI 2013 ANTAR XXIII 2015 Moreno, 2015
6 METHODOLOGY STUDY AREA, BIOLOGICAL SAMPLING & PROCESSING Van Veen grab 0.05m² Gutt, 2007
7 METHODOLOGY STUDY AREA, ABIOTIC SAMPLING & PROCESSING C Currents Speed cms -1 Direction
8 METHODOLOGY STUDY AREA, ABIOTIC SAMPLING PROCESSING Int Med Mackellar Inlet Bathymetric chart (multi-beam) Ext Fjord section a priori classification Depth (m) Sahade et al Grange & Smith 2013 Moreno, 2015
9 METHODOLOGY STUDY AREA, ABIOTIC SAMPLING & PROCESSING FUNCTIONAL classification Detritus feeder Surface Herbivore Highly motile Free-living Suspension feeder Epibenthic Omnivore Discretely motile Free-living Suspension feeder Surface Herbivire Sessile Encrusting Gutt, 2007
10 METHODOLOGY STUDY AREA, ABIOTIC SAMPLING, PROCESSING Poppe & Eliason (2008)
11 RESULTS Diversity estimation ANTAR XXI Shallow soft-bottom macrozoobenthos Species diversity: 94 taxa Estimated diversity: Inner Functional diversity gradient Inner to Outer left to right margin Outer 2013 ANTAR XXI
12 RESULTS % according to FUNCTIONAL COMPONENTS TROPHIC functions FEEDING MODE Deposit f Detritus f PrSc Filter f Deposit * detritus feeders turnover Filter f % FOOD SOURCE Fewer EP SF SS EP Om Ca He year FOOD TYPE Omnivores, predominant
13 RESULTS % according to FUNCTIONAL COMPONENTS DISTRIBUTION functions MOTILITY M D S Few sessile High motility PrSc % LIFE STYLE Free living Burrow dweller Tubiculous
14 Sampling sites RESULTADOS Diversidad funcional E11 Inn XXIII 2015 Mid Out E10 E09 E08 E07 E06 XXI XX XIX XVIII 2008 E XVII E04 E03 E02 E Functional diversity
15 RESULTS Functional diversity Deposit f + Detritus f Suspension f + Filter f Predators + Scavengers
16 Folk, 1954 RESULTS Bathylithology
17 RESULTS Bathylithology Folk, 1954
18 RESULTS Oceanography 62 04' TEMPERATURA SUPERFICIAL (ºC) 62 04' TEMPERATURA DE FONDO (ºC) 62 05' Península Keller 62 05' Península Keller 62 06' Pta. Crepín Est. Macchu Picchu Ensenada Mackellar BAHIA ALMIRANTAZGO ' ' 58 27' ' ' Pta. Crepín Est. Macchu Picchu Ensenada Mackellar BAHIA ALMIRANTAZGO ' ' 58 27' '
19 A) Surface RESULTS B) Sampling depth cm/s
20 RESULTS MDS compendio Sección del Fiordo Inn Mid Out
21 C O N C L U S I O N S Diversity gradients Inn > Out Deposit- Detritus- and Filter f Omnivores Surface Motility Free-living Abundant Salinity, speed, depth currents, resuspension 8ernabémoreno
22 IMMEDIATE PLANS Water mass ADCP + CTD + data loggers (T & ) Sedimentation processes Sediment traps Geochemical analysis In situ observations - Direct - Indirect: ROV deployments, timelapse cameras
23 T H A N K Y O U Bernabé Moreno 8ernabemoreno@gmail.com APECS PERU View publication stats
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