Johanna Gammal

ORCID: 0000-0003-0188-2693
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About
Contact & Profiles
Research Areas
  • Marine Biology and Ecology Research
  • Marine and coastal plant biology
  • Coastal wetland ecosystem dynamics
  • Marine and coastal ecosystems
  • Ecology and Vegetation Dynamics Studies
  • Isotope Analysis in Ecology
  • Microbial Community Ecology and Physiology
  • Wildlife-Road Interactions and Conservation
  • Forest Ecology and Biodiversity Studies
  • Plant and animal studies
  • Diatoms and Algae Research
  • Marine Bivalve and Aquaculture Studies
  • Coral and Marine Ecosystems Studies
  • Species Distribution and Climate Change
  • Wastewater Treatment and Nitrogen Removal
  • Animal Ecology and Behavior Studies
  • Marine and fisheries research
  • Aquatic Invertebrate Ecology and Behavior
  • Soil and Water Nutrient Dynamics
  • Ecosystem dynamics and resilience
  • Land Use and Ecosystem Services

University of Helsinki
2015-2025

University of Waikato
2020-2024

National Institute of Water and Atmospheric Research
2022

Caio Graco‐Roza Sonja Aarnio Nerea Abrego Alicia Teresa Rosario Acosta Janne Alahuhta and 87 more Jan Altman Claudia Angiolini Jukka Aroviita Fabio Attorre Lars Baastrup‐Spohr José Juan Barrera-Alba Jonathan Belmaker Idoia Biurrun Gianmaria Bonari Helge Bruelheide Sabina Burrascano Marta Carboni Pedro Cardoso José C. Carvalho Giuseppe Castaldelli Morten Christensen Gilsineia Corrêa Iwona Dembicz Jürgen Dengler Jiří Doležal Patrícia Domingos Tibor Erős Carlos E. L. Ferreira Goffredo Filibeck Sergio R. Floeter Alan M. Friedlander Johanna Gammal Anna Gavioli Martin M. Goßner Itai Granot Riccardo Guarino Camilla Gustafsson Brian Hayden Siwen He Jacob Heilmann‐Clausen Jani Heino John T. Hunter Vera L. M. Huszar Monika Janišová Jenny Jyrkänkallio‐Mikkola Kimmo K. Kahilainen Julia Kemppinen Łukasz Kozub Carla Kruk Michel Kulbiki Анна Куземко Peter C. le Roux Aleksi Lehikoinen Domênica Teixeira de Lima Ángel López‐Urrutia B. Lukács Miska Luoto Stefano Mammola Marcelo Manzi Marinho Luciana da Silva Menezes Marco Milardi Marcela Miranda Gleyci Aparecida Oliveira Moser Joerg Mueller Pekka Niittynen Alf Norkko Arkadiusz Nowak Jean Pierre Ometto Otso Ovaskainen Gerhard E. Overbeck F. Pacheco Virpi Pajunen Salza Palpurina Félix Picazo Juan Antonio Campos Iván F. Rodil Francesco Sabatini Shira Salingré Michele De Sanctis Ángel M. Segura Lúcia Helena Sampaio da Silva Z. D. Stevanović Grzegorz Swacha Anette Teittinen Kimmo Tolonen Ioannis Tsiripidis Leena Virta Beixin Wang Jianjun Wang Wolfgang W. Weisser Yuan Xu Janne Soininen

Understanding the variation in community composition and species abundances (i.e., β-diversity) is at heart of ecology. A common approach to examine β-diversity evaluate directional by measuring decay similarity among pairs communities along spatial or environmental distance. We provide first global synthesis taxonomic functional distance analysing 148 datasets comprising different types organisms environments.

10.1111/geb.13513 article EN cc-by Global Ecology and Biogeography 2022-05-12

Macrofauna play a key role in the functioning of mangrove ecosystems. Nevertheless, our understanding diversity and functional structure macrofaunal communities across different habitats forests Persian Gulf is limited. In this study, we investigated species biological trait patterns macrofauna mangrove-associated habitats, i.e. encompassing actual forests, adjacent Beaches Creeks, which exhibit levels habitat heterogeneity. Samples were collected from five locations, over four seasons. A...

10.3389/fmars.2020.575480 article EN cc-by Frontiers in Marine Science 2020-09-25

Abstract The current decrease in biodiversity affects all ecosystems, and the impacts of diversity on ecosystem functioning need to be resolved. So far, marine studies about diversity–ecosystem productivity‐relationships have concentrated small‐scale, controlled experiments, with often limited relevance natural ecosystems. Here, we provide a real‐world study effects microorganismal (measured as benthic diatom communities) productivity (using chlorophyll concentration surrogate) heterogeneous...

10.1002/ecy.2765 article EN Ecology 2019-06-04

Abstract There is substantial evidence that biodiversity underpins ecosystem functioning, but it unclear how these relationships change with multiple stressors in complex real-world settings. Coastal zones are affected by numerous (for example, sediment input and nutrient runoff from land) the cumulative effects of may result pronounced unexpected changes functioning ecosystems. To investigate turbidity elevated nutrients on coastal biodiversity-ecosystem relationships, we performed a...

10.1007/s10021-022-00775-4 article EN cc-by Ecosystems 2022-07-12

Estuaries are among the world's most productive ecosystems, but due to their geographic location, they at forefront of anthropogenic pressures. Sea level rise (SLR) is one major consequence climate change that poses a threat estuaries with extensive intertidal habitats. The ecological implications habitat loss have been largely overlooked despite likely significance. We aimed address this knowledge gap by investigating how benthic macroinvertebrate communities and contributions ecosystem...

10.3390/biology12010105 article EN cc-by Biology 2023-01-10

Response diversity increases the potential ‘options’ for ecological communities to respond stress (i.e. response capacity). An indicator of community is different traits associated with their capacity be resistant stress, recover and regulate ecosystem functions. We conducted a network analysis using benthic macroinvertebrate data from large-scale field experiment explore loss along environmental gradients. elevated sediment nutrient concentrations (a process that occurs eutrophication) at...

10.1098/rspb.2023.0403 article EN cc-by Proceedings of the Royal Society B Biological Sciences 2023-05-03

Abstract The biodiversity crisis has increased interest in understanding the role of for ecosystem functioning. Functional traits are often used to infer functions increase our these relationships over larger spatial scales. links between specific and functioning are, however, not always well established. We investigated how choice analyzing either individual species, selected modalities, or trait combinations affected patterns observed on a sandflat this was related natural variability A...

10.1002/ece3.6696 article EN Ecology and Evolution 2020-08-20
Caio Graco‐Roza Sonja Aarnio Nerea Abrego Alicia Teresa Rosario Acosta Janne Alahuhta and 87 more Jan Altman Claudia Angiolini Jukka Aroviita Fabio Attorre Lars Baastrup‐Spohr José Juan Barrera-Alba Jonathan Belmaker Idoia Biurrun Gianmaria Bonari Helge Bruelheide Sabina Burrascano Marta Carboni Pedro Cardoso José C. Carvalho Giuseppe Castaldelli Morten Christensen Gilsineia Corrêa Iwona Dembicz Jürgen Dengler Jiří Doležal Patrícia Domingos Tibor Erős Carlos E. L. Ferreira Goffredo Filibeck Sergio R. Floeter Alan M. Friedlander Johanna Gammal Anna Gavioli Martin M. Goßner Itai Granot Riccardo Guarino Camilla Gustafsson Brian Hayden Siwen He Jacob Heilmann‐Clausen Jani Heino John T. Hunter Vera L. M. Huszar Monika Janišová Jenny Jyrkänkallio‐Mikkola Kimmo K. Kahilainen Julia Kemppinen Łukasz Kozub Carla Kruk Michel Kulbiki Анна Куземко Peter C. le Roux Aleksi Lehikoinen Domênica Teixeira de Lima Angel Lopes-Urrutia B. Lukács Miska Luoto Stefano Mammola Marcelo Manzi Marinho Luciana da Silva Menezes Marco Milardi Marcela Miranda Gleyci Aparecida Oliveira Moser Joerg Mueller Pekka Niittynen Alf Norkko Arkadiusz Nowak Jean Pierre Ometto Otso Ovaskainen Gerhard E. Overbeck F. Pacheco Virpi Pajunen Salza Palpurina Félix Picazo Juan Antonio Campos Iván F. Rodil Francesco Sabatini Shira Salingré Michele De Sanctis Ángel M. Segura Lúcia Helena Sampaio da Silva Z. D. Stevanović Grzegorz Swacha Anette Teittinen Kimmo Tolonen Ioannis Tsiripidis Leena Virta Beixin Wang Jianjun Wang Wolfgang W. Weisser Yuan Xu Janne Soininen

Abstract Understanding the variation in community composition and species abundances, i.e., β-diversity, is at heart of ecology. A common approach to examine β-diversity evaluate directional turnover by measuring decay similarity among pairs communities along spatial or environmental distances. We provide first global synthesis taxonomic functional distance analysing 149 datasets comprising different types organisms environments. modelled an exponential for each dataset using generalized...

10.1101/2021.03.17.435827 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2021-03-19

Abstract Marine soft sediments play crucial roles in global biogeochemical cycles and biodiversity. Yet, with organisms often hidden the sediment, they pose challenges for effective monitoring management. This study introduces a novel approach utilizing sediment microtopography as proxy ecosystem functioning Combining field sampling, benthic chamber incubations, advanced Structure‐from‐Motion photogrammetry techniques, we investigated relationships between microtopographic features various...

10.1002/eap.3069 article EN cc-by-nc-nd Ecological Applications 2024-11-28

Diatoms account for up to 40% of all production in marine environments, but there is a lack knowledge on the relationship between diatom diversity and ecosystem functioning. We studied effect benthic productivity by collecting sediment cores heterogeneous coastal archipelago Baltic Sea. Our results showed that diversity, especially functional likely forms lowest boundary productivity. Thus, although can be high even when low, supports also found environmental heterogeneity environments lead...

10.1002/bes2.1597 article EN cc-by Bulletin of the Ecological Society of America 2019-10-01
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