A5012381259- Planetary Science and Exploration
- Space Exploration and Technology
- Astro and Planetary Science
- Space Science and Extraterrestrial Life
- Marine animal studies overview
- Ichthyology and Marine Biology
- International Law and Human Rights
- Marine and fisheries research
- Polar Research and Ecology
- Religion, Theology, History, Judaism, Christianity
- Fish Ecology and Management Studies
- Global Peace and Security Dynamics
- Biblical Studies and Interpretation
- Space exploration and regulation
- Jewish and Middle Eastern Studies
- Avian ecology and behavior
- European history and politics
- Spaceflight effects on biology
- Jewish Identity and Society
- Geology and Paleoclimatology Research
- Marine and coastal plant biology
- Isotope Analysis in Ecology
- Fish Biology and Ecology Studies
- International Law and Aviation
- Aquatic Ecosystems and Phytoplankton Dynamics
Planetary Science Institute
2022
NASA Planetary Science
2022
Hebrew Union College - Jewish Institute of Religion
1986-2020
City of Cape Town
2006-2019
California Institute of Technology
2018
University of Arizona
2018
National Aeronautics and Space Administration
2014
University of Michigan
2013
Valparaiso University
2011
British Red Cross
1987-2008
The Curiosity rover discovered fine-grained sedimentary rocks, which are inferred to represent an ancient lake and preserve evidence of environment that would have been suited support a martian biosphere founded on chemolithoautotrophy. This aqueous was characterized by neutral pH, low salinity, variable redox states both iron sulfur species. Carbon, hydrogen, oxygen, sulfur, nitrogen, phosphorus were measured directly as key biogenic elements; inference, is assumed available. probably had...
Scheduled to land in August of 2012, the Mars Science Laboratory (MSL) Mission was initiated explore habitability Mars. This includes both modern environments as well ancient recorded by stratigraphic rock record preserved at Gale crater landing site. The Curiosity rover has a designed lifetime least one year (∼23 months), and drive capability 20 km. Curiosity's science payload specifically assembled assess gas chromatograph-mass spectrometer analyzer that will search for organic carbon...
The large-scale spatial dynamics and population structure of marine top predators are poorly known. We present electronic tag photographic identification data showing a complex suite behavioral patterns in white sharks. These include coastal return migrations the fastest known transoceanic migration among swimming fauna, which provide direct evidence link between widely separated populations South Africa Australia. Transoceanic involved to original capture location, dives depths 980 meters,...
We determined radiogenic and cosmogenic noble gases in a mudstone on the floor of Gale Crater. A K-Ar age 4.21 ± 0.35 billion years represents mixture detrital authigenic components confirms expected antiquity rocks comprising crater rim. Cosmic-ray-produced (3)He, (21)Ne, (36)Ar yield concordant surface exposure ages 78 30 million years. Surface occurred mainly present geomorphic setting rather than during primary erosion transport. Our observations are consistent with deposition shortly...
The NASA Astrobiology Roadmap provides guidance for research and technology development across the enterprises that encompass space, Earth, biological sciences. ongoing of astrobiology roadmaps embodies contributions diverse scientists technologists from government, universities, private institutions. addresses three basic questions: how does life begin evolve, exist elsewhere in universe, what is future on Earth beyond? Seven Science Goals outline following key domains investigation:...
White sharks (Carcharodon carcharias) are threatened apex predators and identification of their critical habitats how these used essential to ensuring improved local ultimately global white shark protection. In this study we investigated habitat use by in False Bay, South Africa, using acoustic telemetry. 56 (39 female, 17 male), ranging size from 1.7-5 m TL, were tagged with transmitters monitored on an array 30 receivers for 975 days. To investigate the effects season, sex a generalized...
On November 5–8, 2019, the "Mars Extant Life: What's Next?" conference was convened in Carlsbad, New Mexico. The gathered a community of actively publishing experts disciplines related to habitability and astrobiology. Primary conclusions are as follows: A significant subset attendees concluded that there is realistic possibility Mars hosts indigenous microbial life. powerful theme permeated key search for martian extant life lies identifying exploring refugia ("oases"), where conditions...
Until the 18th century Jews lived in Christian Europe, spiritually and often physically removed form stream of European culture. During Enlightenment intellectual Europe accepted a philosophy which, by universality its ideals, reached out to embrace Jew within greater community man. The began feel European, his traditional identity became problem for first time. response Jewish leadership Germany this crisis is subject book. Chief among those men who struggled with problems consciousness...
Southern Hemisphere humpback whales (Megaptera novaeangliae) generally undertake annual migrations from polar summer feeding grounds to winter calving and nursery in subtropical tropical coastal waters. Evidence for such arises seasonality of historic whaling catches by latitude, Discovery natural mark returns, results satellite tagging studies. Feeding is believed be limited the southern region, where Antarctic krill (Euphausia superba) has been identified as primary prey item....
Abstract Animals are distributed relative to the resources they rely upon, often scaling in abundance available resources. Yet, heterogeneously environments, describing resource availability at relevant spatial scales remains a challenge ecology, inhibiting understanding of predator distribution and foraging decisions. We investigated behaviour two species rorqual whales within spatially limited numerically extraordinary super‐aggregations oceans. additionally described lognormal prey data...
The Mars Sample Return (MSR) Campaign must meet a series of scientific and technical achievements to be successful. While the respective engineering responsibilities retrieve samples have been formalized through Memorandum Understanding between ESA NASA, roles elements yet fully defined. In April 2020, NASA jointly chartered MSR Science Planning Group 2 (MSPG2) build upon previous planning efforts in defining 1) an end-to-end Program 2) needed functionalities design requirements for...
Predators can impact prey via predation or risk effects, which initiate trophic cascades. Given widespread population declines of apex predators, understanding and predicting the associated ecological consequences is a priority. When relatively unpredictable uncontrollable by prey, loss predators hypothesized to release from stress; however, there are few tests this hypothesis in wild. A well-studied predator–prey system between white sharks ( Carcharodon carcharias ) Cape fur seals...
Abstract The genus Cephalorhynchus (Gray 1846) consists of four species small coastal dolphins distributed in cool temperate waters around the Southern Hemisphere. Each is sympatric with other members subfamily Lissodelphininae but widely separated from congeners. To describe origin and radiation these species, we examined 442 bp mitochondrial DNA control region sequences 307 individuals compared to . We investigate hypotheses that a monophyletic or, alternatively, have arisen separately...
Abstract Crawford, R. J. M., Dundee, B. L., Dyer, Klages, N. T., Meÿer, M. A., and Upfold, L. 2007. Trends in numbers of Cape gannets (Morus capensis), 1956/57–2005/06, with a consideration the influence food other factors – ICES Journal Marine Science, 64, 169–177. capensis) breed at six colonies Namibia South Africa. Population size averaged about 250 000 pairs over period 1956/1957–1968/1969 150 from 1978/1979 to 2005/2006. Over whole 50-y period, three Namibian fell by 85–98%, greater...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 552:241-253 (2016) - DOI: https://doi.org/10.3354/meps11744 An integrated mark-recapture and genetic approach estimate population size of white sharks in South Africa Sara Andreotti1, Michael Rutzen2, Stéfan van der Walt3, Sophie Von Heyden1, Romina Henriques1, Meÿer4, Herman Oosthuizen4, Conrad A. Matthee1,*...
Predators can impact ecosystems through consumptive or risk effects on prey. Physiologically, be mediated by energetic mechanisms stress responses. The predation-stress hypothesis predicts that induces in prey, which affect survival and reproduction. However, empirical support for this is both mixed limited, the conditions cause predation to induce responses some cases, but not others, remain unclear. Unusually clear-cut variation exposure of Cape fur seals (Arctocephalus pusillus pusillus)...
Abstract The Mars 2020/Mars Sample Return (MSR) Depot Science Community Workshop was held on September 28 and 30, 2022, to assess the Scientifically‐Return Worthy (SRW) value of full collection samples acquired by rover Perseverance at Jezero Crater, a proposed subset be left as First location within Crater called Three Forks. primary outcome workshop that community is in consensus following statement: set ten sample tubes includes seven rock samples, one regolith sample, atmospheric witness...