A5000691924- Coral and Marine Ecosystems Studies
- Marine and coastal plant biology
- Hydrology and Sediment Transport Processes
- Marine and fisheries research
- Ocean Acidification Effects and Responses
- Marine Sponges and Natural Products
- Soil erosion and sediment transport
- Marine Invertebrate Physiology and Ecology
- Marine Ecology and Invasive Species
- Flood Risk Assessment and Management
- Atmospheric chemistry and aerosols
- Radioactive element chemistry and processing
- Plant responses to water stress
- Marine Biology and Ecology Research
- Microbial bioremediation and biosurfactants
- Environmental DNA in Biodiversity Studies
- Oil Spill Detection and Mitigation
- Geochemistry and Elemental Analysis
- Plant Water Relations and Carbon Dynamics
- Tree-ring climate responses
- Environmental Toxicology and Ecotoxicology
- Aquaculture disease management and microbiota
- Ichthyology and Marine Biology
- Cephalopods and Marine Biology
- Reproductive biology and impacts on aquatic species
Dead Sea and Arava Science Center
2021-2024
Interuniversity Institute for Marine Sciences in Eilat
2008-2019
Hebrew University of Jerusalem
2013-2016
Tel Aviv University
2008-2014
Israel Oceanographic and Limnological Research
2010-2014
Abstract Dust is an important iron (Fe) source to the ocean, but its utilization by phytoplankton constrained rapid sinking and slow dissolution dust-bound (dust-Fe). Colonies of globally cyanobacterium, Trichodesmium, overcome these constraints efficient dust capturing active dust-Fe dissolution. In this study we examined ability Trichodesmium colonies maximize their Fe supply from selectively collecting Fe-rich particles. Testing for selectivity in particle collection, supplied ~600...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 426:149-159 (2011) - DOI: https://doi.org/10.3354/meps09018 Repeated bleaching events may result in high tolerance and notable gametogenesis stony corals: Oculina patagonica as a model Rachel Armoza-Zvuloni1,2,3,*, Roee Segal1, Esti Kramarsky-Winter1, Yossi Loya1 1Department of Zoology, Tel Aviv University,...
Abstract Corals make use of different chemical compounds during interactions with prey, predators and aggressors. Hydrogen Peroxide (H 2 O ) is produced released by a wide range organisms as part their defense against grazers or pathogens. In coral reefs, the large fluxes relatively long half-life H 2, it potentially important info-chemical molecule. Here we describe previously unstudied phenomenon rapid release from reef-building Stylophora pistillata feeding on zooplankton in response to...
Traits that influence reproductive success and contribute to isolation in animal plant populations are a central focus of evolutionary biology. In the present study we used an experimental approach demonstrate occurrence environmental effects on sexual asexual reproduction, provide evidence for plasticity inter-clonal fertilization laboratory-cultured lines sea anemone Aiptasia diaphana. We showed A. diaphana, both reproduction by pedal laceration, have seasonal components. The rate...
Abstract. Hydrogen peroxide (H2O2), a common reactive oxygen species, plays multiple roles in coral health and disease. Elevated H2O2 production by the symbiotic algae during stress may result symbiosis breakdown bleaching of coral. We have recently reported that various Red Sea corals release antioxidants to their external milieu, can influence dynamics reef. Here, we present laboratory characterization antioxidant activity kinetics intact, non-stressed Stylophora pistillata. Experimenting...
Background: Rainfall pulse patterns - defined by variability in the timing, intensity, frequency, and duration of precipitation events play a critical role shaping functionality all terrestrial ecosystems. These regulate water availability, nutrient cycling, primary productivity. Rainfall-dependent, runoff-dependent, flood-dependent dryland ecosystems differ structurally functionally due to their reliance on distinct hydrological processes triggered rainfall pulses. serve as effective models...
Abstract The dynamics of hydrogen peroxide (H 2 O ) was studied in the fringing coral reef off coast Eilat, Red Sea. Diurnal changes H concentrations lagoon were typical photochemically produced species. During daytime accumulated at low tide and exceeded open water by 100–250 nM. Elevated decay kinetics (termed hereafter antioxidant activity) also recorded tide. observed activities high enough to moderate accumulation lagoon. In pursuit source, ability corals release activity their...
Reproductive development of anthozoans reveals wide range breeding strategies. Here, we report the occurrence trioecy in sea anemone Aiptasia diaphana (co-occurrence males, females, and hermaphrodites), which so far was well documented only plants. Age-homogeneous populations were obtained from pedal lacerates (asexual propagules) cultured under control conditions. Careful documentation growth, gamete morphology, vertebrate-like steroid (i.e., progesterone, testosterone, estradiol) levels...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 363:103-108 (2008) - DOI: https://doi.org/10.3354/meps07473 Structural deformation of branching corals associated with vermetid gastropod Dendropoma maxima Assaf Zvuloni1,2,*, Rachel Armoza-Zvuloni1,2, Yossi Loya1 1Department Zoology, The George S. Wise Faculty Life Sciences, Tel Aviv University, 69978,...
Ocean warming has exacerbated the severity of coral diseases, many which are mediated by pathogenic bacteria. In response to presence pathogens various organisms activate an oxidative burst response, involving strong and rapid generation reactive oxygen species (ROS) that serve both as bactericides signals for other defense systems. While components immune systems being unveiled, triggered bacteria proximity, not yet been reported. Hydrogen Peroxide (H2O2), one ROS produced during burst, is...
Floods rarely occur in hyper-arid deserts and little is known about the magnitude frequency of sediment delivery from their basins, despite importance to changes landscape, infrastructures engineering activities. Sediment yield Nahal Nehushtan watershed (11.9 km2) located Timna Valley southern Israel was determined by assessing stratigraphic sections its 60-year reservoir deposits. Stratigraphic correlation between event couplets allowed for quantification yields representing 13 former flow...
Acacia encompasses a keystone genus across the Middle Eastern and African drylands. This study assesses dynamics of populations in two ephemeral stream channels (Nahal Naomi Nahal Yael) hyper-arid Arava region following establishment dam upstream channel Yael long-term regional drought episode. The assessments were conducted at individual population levels, for period 45 years (during 1972, 1994 2017). In Naomi, increased by 35% during 1972–1994 (a relatively rainy period) experienced low...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 441:25-32 (2011) - DOI: https://doi.org/10.3354/meps09369 Multifocal bleaching of Millepora dichotoma in Gulf Aqaba (Eilat), Red Sea Assaf Zvuloni1,2,3,*, Rachel Armoza-Zvuloni2,3,4, Yonathan Shaked3 1Israel Nature and Parks Authority, PO Box 667, Eilat 88000, Israel 2Department Zoology, Faculty Life...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 463:301-303 (2012) - DOI: https://doi.org/10.3354/meps10003 REPLY COMMENT Feeding activity by blenny Exallias brevis causes multifocal bleaching in corals: Reply Carlson Assaf Zvuloni1,*, Rachel Armoza-Zvuloni2,3, Yonathan Shaked3 1Israel Nature and Parks Authority, PO Box 667, Eilat 88000, Israel 2Department...
Abstract. Hydrogen peroxide (H2O2), a common reactive oxygen species, plays multiple roles in coral health and disease. Elevated H2O2 production by the symbiotic algae during stress may result symbiosis breakdown bleaching of coral. We have recently reported that various Red Sea corals release antioxidants to their external milieu can influence dynamics reef. Here we present laboratory characterization antioxidant activity kinetics intact, non-stressed Stylophora pistillata. Experimenting...
<p>Floods rarely occur in hyper-arid deserts and little is known about the magnitude frequency of sediment delivery from their basins, despite importance to changes landscape as well infrastructures engineering activities. Sediment yield Nahal Nehushtan watershed (15.7 km<sup>2</sup>) located Timna Valley southern Israel, was determined by assessing stratigraphic sections its 60-year reservoir deposits. Stratigraphic correlation between event...