28 Works

Palaeoecological data of KTG core, Katingan, Central Kalimantan, Borneo, Indonesia

K. Anggi Hapsari, Tim Jennerjahn, Septriono Hari Nugroho, Eko Yulianto & Hermann Behling
Southeast Asian peatlands, along with their various important ecosystem services, are mainly distributed in the coastal areas of Sumatra and Borneo. These ecosystems are threatened by coastal development, global warming and sea level rise (SLR). Despite receiving growing attention for their biodiversity and as massive carbon stores, there is still a lack of knowledge on how they initiated and evolved over time, and how they responded to past environmental change, i.e., precipitation, sea level and...

Shallow-marine carbonate cementation in Holocene segments of the calcifying green alga Halimeda

Thomas Mann , André Wizemann , Marleen Stuhr , Yannis Kappelamann , Alexander Janßen , Jamaluddin Jompa & Hildegard Westphal
Early-diagenetic cementation of tropical carbonates results from the combination of numerous physico-chemical and biological processes. In the marine phreatic environment it represents an essential mechanism for the development and stabilization of carbonate platforms. However, many early-diagenetic cements that developed in the marine phreatic environment are likely to become obliterated during later stages of meteoric or burial diagenesis. In this contribution, a petrographic microfacies analysis of Holocene Halimeda segments collected on a coral island in the...

Antifouling coatings can reduce algal growth in coral aquaculture

Lisa Röpke, David Brefeld, Ulrich Soltmann, Carly Randall, Andrew Negri & Andreas Kunzmann

Measurement of Diffuse Submarine Groundwater Discharge at intertidal puddles at the Königshafen - Sylt

Sebastian Janßen , Alexandra Nozik , Ulf Mallast & Nils Moosdorf
Coastal regions represent a transition between land and sea. From the hydro(geo)logical point of view freshwater and saltwater are coming together here. The groundwater discharge which discharges directly into the sea is called submarine groundwater discharge (SGD). At the regional scale, SGD is often measured indirectly based on tracers. At the local scale, SGD flux over time can be measured directly, e.g. using seepage meters. However, this method only represents the punctual source of discharge....

Data from: Differential recycling of coral and algal dissolved organic matter via the sponge loop

Laura Rix, Jasper M. De Goeij, Dick Van Oevelen, Ulrich Struck, Fuad A. Al-Horani, Christian Wild & Malik S. Naumann
Corals and macroalgae release large quantities of dissolved organic matter (DOM), one of the largest sources of organic matter produced on coral reefs. By rapidly taking up DOM and transforming it into particulate detritus, coral reef sponges are proposed to play a key role in transferring the energy and nutrients in DOM to higher trophic levels via the recently discovered sponge loop. DOM released by corals and algae differs in quality and composition, but the...

Data from: Discovery of a multi-species shark aggregation and parturition area in the Ba Estuary, Fiji Islands

Tom Vierus, Stefan Gehrig, Juerg M. Brunnschweiler, Kerstin Glaus, Martin Zimmer, Amandine D. Marie & Ciro Rico
Population declines in shark species have been reported on local and global scales, with overfishing, habitat destruction and climate change posing severe threats. The lack of species-specific baseline data on ecology and distribution of many sharks, however, makes conservation measures challenging. Here we present a fisheries-independent shark survey from the Fiji Islands, where scientific knowledge on locally occurring elasmobranchs is largely still lacking despite the location’s role as a shark hotspot in the Pacific. Juvenile...

Data from: Ontogenetic resource utilization and migration reconstruction with δ13C values of essential amino acids in the Cynoscion acoupa otolith

Kim Vane, Thomas Larsen, Barbara M. Scholz-Böttcher, Bernd Kopke & Werner Ekau
1. With the increasing anthropogenic impacts on fish habitats, it has become more important to understand which primary resources sustain fish populations. This resource utilization can differ between fish life stages and individuals can migrate between habitats in search of resources. Such lifetime information is difficult to obtain due to the large spatial and temporal scales of fish behaviour. The otolith organic matrix has the potential to indicate this resource utilization and migration with δ13C...

Data from: Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae

Steve Doo, Aero Leplastrier, Alexia Graba-Landry, Januar Harianto, Ross Coleman & Maria Byrne
Concurrent anthropogenic global climate change and ocean acidification is expected to have a negative impact on calcifying marine organisms. While knowledge of biological responses of organisms to oceanic stress has emerged from single species experiments, these do not capture ecologically relevant scenarios where the potential for multi-organism physiological interactions is assessed. Marine algae provide an interesting case study, as their photosynthetic activity elevates pH in the surrounding microenvironment, potentially buffering more acidic conditions for associated...

Mangroves and Meaning-Making: A mutual relationship over time? Transect Walks transcripts

Anne-Katrin Broocks
EN: Transcription of Transect Walks through the mangrove user communities and a science institution engaged in mangrove use. Developed in the context of Rapid Rural Appraisal methods for quick data gathering in community development (Chambers 2012, Pelto 2016:77), the method comprises of a systematical walk through the sample area accompanied by one or more knowledgeable people of the zone (Mukherjee 1997:52). Every object of interest was discussed and explained.ES: Transcripciones de Transect Walks en los...

Data from: Seascapes as drivers of herbivore assemblages in coral reef ecosystems

George Roff, Sonia Bejarano, Mark Priest, Alyssa Marshell, Iliana Chollett, Robert S. Steneck, Christopher Doropoulos, Yimnang Golbuu & Peter J. Mumby
Herbivorous fish maintain a critical ecosystem function on coral reefs by grazing algae and maintaining highly productive algal turf assemblages. Current paradigms implicate habitat complexity, predation and primary productivity as major drivers of the distribution and abundance of herbivorous fish, yet little is known about the relative contribution of these factors. Here, we compare bottom-up and top-down drivers of notional herbivore assemblages across an environmental gradient of wave exposure in the Palau archipelago. We surveyed...

Data from: The shape of success in a turbulent world: wave exposure filtering of coral reef herbivory

Sonia Bejarano, Jean-Baptiste Jouffray, Iliana Chollett, Robert Allen, George Roff, Alyssa Marshell, Robert Steneck, Sebastian C. A. Ferse & Peter J. Mumby
While environmental filters are well-known factors influencing community assembly, the extent to which these modify species functions, and entire ecosystem processes, is poorly understood. Focusing on a high-diversity system, we ask whether environmental filtering has ecosystem-wide effects beyond community assembly. We characterise a coral reef herbivorous fish community for swimming performance based on ten functional traits derived from fish morphology. We then investigate whether wave exposure modifies the functional make-up of herbivory, and the absolute...

Data from: Rapid radiation in a highly diverse marine environment

Kosmas Hench, W. Owen McMillan, Oscar Puebla & Martin Helmkampf
Rapid diversification is often observed when founding species invade isolated or newly formed habitats that provide ecological opportunity for adaptive radiation. However, most of the Earth’s diversity arose in diverse environments where ecological opportunities appear to be more constrained. Here, we present a striking example of a rapid radiation in a highly diverse marine habitat. The hamlets, a group of reef fishes from the wider Caribbean, have radiated into a stunning diversity of color patterns...

No warming in the eastern Gulf of Mexico since 1845 recorded by a Siderastrea siderea coral from Cuba

Marie Harbott , Henry C. Wu , Henning Kuhnert , Simone Kasemann , Anette Meixner , Carlos Jimenez , Patricia González-Díaz & Tim Rixen
Changes in the surface ocean pH and temperature caused by the uptake of anthropogenic CO2 are posing a threat to calcifying marine organisms. Recent studies have observed significant impacts on coral reef ecosystems with impaired carbonate skeletal growth and decreased calcification due to acidifying oceans. The current coverage of observations for the northwestern Cuban coastal waters provides an incomplete picture of natural climate variability over interannual to interdecadal timescales, showing the need for high resolution...

Mangroves and Meaning-Making: A mutual relationship over time? Ethnographic Data

Anna-Katharina Hornidge, María José Barragán-Paladines, Anne-Katrin Broocks & Martin Zimmer
EN: Mangrove forests are located at the in-between of the sea and the land. People around the world have made sense of mangroves in many different ways, ranging from mangroves as „home of ghosts“, „resources“, „biodiversity reserve“, „coastal protection“ to „death bringers“. The aim of the research project is to understand how people in Southern Ecuador have made sense of their mangrove surrounding at the Gulf of Guayaquil over the last 200 years, and how...

Data from: Phytoplankton size diversity and ecosystem function relationships across oceanic regions

Esteban Acevedo-Trejos, Emilio Marañón & Agostino Merico
Trait diversity, a key component of biodiversity, mediates many essential ecosystem functions and services. However, the mechanisms behind such relationships at large spatial scales are not fully understood. Here we adopt the functional biogeography approach to investigate how the size composition of phytoplankton communities relates to primary production and export production along a broad latitudinal gradient. Using in situ phytoplankton size distribution data and a trait-based model, we find an increase in the average phytoplankton...

Data from: High rates of carbon and dinitrogen fixation suggest a critical role of benthic pioneer communities in the energy and nutrient dynamics of coral reefs

Florian Roth, Denis Karcher, Nils Rädecker, Sönke Hohn, Susana Carvalho, Timothy Thomson, Franziska Saalmann, Christian R. Voolstra, Benjamin Kürten, Ulrich Struck, Burton Jones & Christian Wild
1. Following coral mortality in tropical reefs, pioneer communities dominated by filamentous and crustose algae efficiently colonize substrates previously occupied by coral tissue. This phenomenon is particularly common after mass coral mortality following prolonged bleaching events associated with marine heatwaves. 2. Pioneer communities play an important role for the biological succession and reorganization of reefs after disturbance. However, their significance for critical ecosystem functions previously mediated by corals, such as the efficient cycling of carbon...

Fostering Marine Biodiversity Data Sharing for Decision-Making in the Western Indian Ocean Region

Désirée Schwindenhammer, Hauke Kegler, Hauke Reuter, Christopher Muhando, Daudi Msagameno, George Rushingisha, Arthur Tuda, Theuri Mwangi & David Obura
This policy brief informs decision-makers about the benefits of effective marine biodiversity data sharing and proposes measures to encourage and improve sharing among stakeholders. The oceans and coastal areas in Eastern African countries are home to an abundance of marine biodiversity, with immense ecological and socioeconomic value. Stakeholders have varying interests concerning shared ecosystems. Transboundary conservation goals and harmonised coastal management strategies are of great value to sustain ecological services for future generations and to...

SCUBA belt transects for abundance data H. cochlea and H. aequicostatus

Natalia Herrán
Marine symbioses are integral to the persistence of ecosystem functioning in coral reefs. Solitary corals of the species Heteropsammia cochlea and Heterocyathus aequicostatus have been observed to live in symbiosis with the sipunculan worm Aspidosiphon muelleri muelleri, which inhabits a cavity within the coral, in Zanzibar (Tanzania). The symbiosis of these photosymbiotic corals enables the coral holobiont to move, in fine to coarse unconsolidated substrata, a process termed as “walking”. This allows the coral to...

Unique islets in SE Asia: How Holocene climate and sea-level controlled growth of a coral reef island

Yannis Kappelmann, Hildegard Westphal, André Wizemann & Thomas Mann
Coral reef islands are unconsolidated landforms, composed of skeletal carbonate from surrounding reefs and related ecosystems. Facing the predicted rise of sea-level and a changing environment in the next decades, response of low-lying coral reef islands is of great scientific and public interest. To better estimate future behavior, it is necessary to know and classify the effects of past environmental changes on the sedimentary system. In SE Asia, sedimentological understanding of the development of these...

Mangroves and Meaning-Making: A mutual relationship over time? Ethnographic interview transcripts

Anne-Katrin Broocks
EN: Transcriptions of semi-structured interviews held with mangrove use groups during field work in the mangrove areas of Southern Ecuador. Questions developed based on cultural domain analysis (Borgatti 1994, Bernard 2006:266ff., Schnegg and Lang 2008) and grand tour questions (Spradley 1979:86) within the theoretical framework of the Sociology of Knowledge.ES: Transcripciones de entrevistas abiertas estandardizadas realizados con grupos usando los manglares durante un trabajo de campo en los manglares de Ecuador del sur. Cuestionario fue...

Data from: The curious case of Hermodice carunculata (Annelida: Amphinomidae): evidence for genetic homogeneity throughout the Atlantic Ocean and adjacent basins

Joseph B. Ahrens, Elizabeth Borda, Rômulo Barroso, Paulo C. Paiva, Alexandra M. Campbell, Alexander Wolf, Maggy M. Nugues, Greg W. Rouse & Anja Schulze
Over the last few decades, advances in molecular techniques have led to the detection of strong geographic population structure and cryptic speciation in many benthic marine taxa, even those with long-lived pelagic larval stages. Polychaete annelids, in particular, generally show a high degree of population divergence, especially in mitochondrial genes. Rarely have molecular studies confirmed the presence of ‘cosmopolitan’ species. The amphinomid polychaete Hermodice carunculata was long considered the sole species within its genus, with...

Data from: Community-wide scan identifies fish species associated with coral reef services across the Indo-Pacific

Eva Maire, Sébastien Villéger, Nicholas A.J. Graham, Andrew S. Hoey, Joshua Cinner, Sebastian C.A. Ferse, Catherine Aliaume, David J. Booth, David A. Feary, Michel Kulbicki, Stuart A. Sandin, Laurent Vigliola, David Mouillot & Sebastian C. A. Ferse
Determining whether many functionally complementary species or only a subset of key species are necessary to maintain ecosystem functioning and services is a critical question in community ecology and biodiversity conservation. Identifying such key species remains challenging, especially in the tropics where many species co-occur and can potentially support the same or different processes. Here, we developed a new community-wide scan (CWS) approach, analogous to the genome-wide scan, to identify fish species that significantly contribute,...

Guidance for planning and conducting a co-design phase for collaboration in marine research projects

Sebastian Ferse, Marie Fujitani & Rebecca Lahl

Mangroves and Meaning-Making: A mutual relationship over time? Expert interview transcripts

Anne-Katrin Broocks
EN: Transcriptions of semi-structured interviews held with stakeholders involved in mangrove management and/or mangrove use during field work in the mangrove areas of Southern Ecuador. Questions developed based on cultural domain analysis (Borgatti 1994, Bernard 2006:266ff., Schnegg and Lang 2008) and grand tour questions (Spradley 1979:86) within the theoretical framework of the Sociology of Knowledge. The lack of female voices is not only coincidently but symptomatic for the scientific and everyday-life (mangrove) discourse (cf. Merchant...

Microplastics alter feeding strategies of a coral reef organism

Marlena Joppien, Hildegard Westphal, Marleen Stuhr & Steve Doo
Increasing marine microplastic pollution has detrimentally impacted organismal physiology and ecosystem functioning. While previous studies document negative effects of microplastics on coral reef animals, the potential responses of organisms such as Large Benthic Foraminifera (LBF) are largely unknown. Here, we document the impact of microplastics on heterotrophic feeding behavior of LBF. Specimens of Amphistegina gibbosa were incubated in three experimental treatments: (1) Artemia sp. nauplii only; (2) pristine microplastic particles only; (3) choice of nauplii...

Registration Year

  • 2022
  • 2021
  • 2020
  • 2018
  • 2017
  • 2013

Resource Types

  • Dataset
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  • Leibniz Centre for Tropical Marine Research
  • Leibniz Center for Tropical Marine Ecology
  • University of Bremen
  • Leibniz-Zentrum für Marine Tropenforschung, Bremen, Germany
  • Federal Institute for Geosciences and Natural Resources
  • Interuniversity Institute for Marine Sciences in Eilat
  • University of Queensland
  • University of Maine
  • Smithsonian Institution
  • University of Göttingen