Lisa Rodrigues

Lisa Rodrigues
Villanova University | Nova · Department of Geography and the Environment

About

34
Publications
8,270
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,005
Citations

Publications

Publications (34)
Article
As coastal ecosystems are impacted by land use change and anthropogenic activities, oysters can be an important tool for monitoring local water quality. We collected oysters (Crassostrea rhizophorae and Isognomon alatus) from coastal sites near Guánica and La Parguera in southwest Puerto Rico and analyzed their tissue for concentrations of Ag, As,...
Article
Full-text available
Coral bleaching events are increasing with such frequency and intensity that many of the world’s reef-building corals are in peril. Some corals appear to be more resilient after bleaching but the mechanisms underlying their ability to recover from bleaching and persist are not fully understood. We used shotgun proteomics to compare the proteomes of...
Article
Identifying sources of terrestrial sediment to the ocean is important for watershed managers because of the harmful impacts of sediment on nearshore marine ecosystems. The Rio Loco watershed (RLW) in southwest Puerto Rico has been extensively modified, currently comprised of small mountainous rivers connected by reservoirs and irrigation canals to...
Article
Full-text available
Mesophotic reef corals remain largely unexplored in terms of the genetic adaptations and physiological mechanisms to acquire, allocate, and use energy for survival and reproduction. In the Hawaiian Archipelago, the Leptoseris species complex form the most spatially extensive mesophotic coral ecosystem known and provide habitat for a unique communit...
Article
Full-text available
On low-lying, tropical and sub-tropical coastlines freshwater marshes may be replaced by salt--tolerant mangroves in response to relative sea-level rise. Pollen analysis of radiocarbon--dated sediment cores showed that such a change occurred in Hungry Bay, Bermuda during the late Holocene. This well-established paleoenvironmental trajectory provide...
Conference Paper
The coral reefs of Guánica Bay along the southwest coast of Puerto Rico are believed to be severely degraded due to influxes of sediment and nutrients from the adjacent Rio Loco watershed. Over the last several decades, land degradation in the headwater regions of the watershed, largely associated with agricultural and pastoral practices, has creat...
Article
Coral skeletal δ13C can be a paleo-climate proxy for light levels (i.e., cloud cover and seasonality) and for photosynthesis to respiration (P/R) ratios. The usefulness of coral δ13C as a proxy depends on metabolic isotope effects (related to changes in photosynthesis) being the dominant influence on skeletal δ13C. However, it is also influenced by...
Article
Full-text available
Parental effects have been largely unexplored in marine organisms and may play a significant role in dictating the phenotypic range of traits in coral offspring, influencing their ability to survive environmental challenges.This study explored parental effects and life-stage differences in the Hawaiian reef-building coral Montipora capitata from di...
Article
Full-text available
Corals rely on stored energy reserves (i.e., lipids, carbohydrates, and protein) to survive bleaching events. To better understand the physiological implications of coral bleaching on lipid catabolism and/or synthesis, we measured the δ13C of coral total lipids (δ13CTL) in experimentally bleached (treatment) and non-bleached (control) Porites compr...
Article
The role of both host and dinoflagellate symbionts was investigated in the response of reef-building corals to thermal stress in the light. Replicate coral nubbins of Stylophora pistillata and Porites cylindrica from the GBR were exposed to either 28 °C (control) or 32 °C for 5 days before being returned to an ambient reef temperature (28 °C). S. p...
Article
Calcinus verrilli, a hermit crab endemic to Bermuda, is unusual in that it inhabits both gastropod shells (Cerithium litteratum) and gastropod tubes (Dendropoma irregulare and Dendropoma annulatus; Vermicularia knorrii and Vermicularia spirata). A significant difference was observed between the uropod symmetry of shell dwellers and tube dwellers. T...
Article
Full-text available
Bleached and non-bleached fragments of three species of Hawaiian corals were exposed to enhanced and ambient concentrations of zooplankton at 1 and 6 m depth to determine the contribution of zooplankton to the coral's daily carbon budget. The size and taxonomic grouping were recorded for every zooplankton captured and the relative input of zooplank...
Article
Full-text available
Chlorophyll fluorescence has been used to predict and monitor coral bleaching over short timescales (hours to days), but long-term changes during recovery remain largely unknown. To evaluate changes in fluorescence during long-term bleaching and recovery, Porites compressa and Montipora capitata corals were experimentally bleached in tanks at 30 de...
Article
Corals rely on stored reserves, especially lipids, to survive bleaching events. Lipid class composition reveals the lipid source, and provides evidence of metabolic changes (i.e., photoautotrophic or heterotrophic) during bleaching and recovery. Porites compressa Dana, 1846 and Montipora capitata Dana, 1846 corals were experimentally bleached in ou...
Article
Full-text available
With reduced zooxanthellae, chlorophyll a (Chl a), or both, concentrations, bleached corals rely on some combination of energy reserves (i.e., lipid, carbohydrate, protein) and heterotrophy to survive and recover. To understand the dynamics of energy reserves and metabolism during long-term recovery, Pontes compressa and Montipora capitata corals w...
Article
Full-text available
Inhaled corticosteroids are not as effective as oral corticosteroids in school-aged children with severe acute asthma. It is uncertain how inhaled corticosteroids compare with oral corticosteroids in mild to moderate exacerbations. The purpose of this work was to determine whether there is a significant difference in the percentage of predicted for...
Article
Full-text available
We tested the effectiveness of stable isotopes as recorders of physiological changes that occur during coral bleaching and recovery. Montipora capitata and Porites compressa fragments were bleached in outdoor tanks with seawater temperature raised to 30 °C (treatment corals) for one month. Additional fragments were maintained at 27 °C in separate t...
Article
Full-text available
Mass coral bleaching events caused by elevated seawater temperatures have resulted in extensive coral mortality throughout the tropics over the past few decades. With continued global warming, bleaching events are predicted to increase in frequency and severity, causing up to 60% coral mortality globally within the next few decades. Although some c...
Article
Pre-treatments are often used to remove organic “contaminant” material prior to isotopic analyses of coral skeletal samples. Here we conducted three experiments to test the pre-treatment effect of water, 30% hydrogen peroxide (H2O2), and household bleach [5.25% sodium hypochlorite (NaClO3) and 0.15% sodium hydroxide (NaOH)], on the stable isotopic...
Article
Full-text available
Pre-treatments are often used to remove organic “contaminant” material prior to isotopic analyses of coral skeletal samples. Here we conducted three experiments to test the pre-treatment effect of water, 30% hydrogen peroxide (H2O2), and household bleach [5.25% sodium hypochlorite (NaClO3) and 0.15% sodium hydroxide (NaOH)], on the stable isotopic...
Article
Coral bleaching, the loss of endosymbiotic zooxanthellae and/or chlorophyll a (chl a ), results in corals that appear white. Photosynthesis and photosynthetically fixed carbon translocated to the host decreases, so bleached corals may need to rely on energy reserves to recover. Impact on coral host physiology is not well understood. Porites compres...
Article
Full-text available
Coral skeletal stable oxygen isotopes (delta 18O) reflect changes in seawater temperature and salinity, while stable carbon isotopes (delta 13C) reflect a combination of both metabolic (photosynthesis and feeding) and kinetic fractionation. Together, the two isotopic signatures may be used as a proxy for past bleaching events. During bleaching, inc...
Article
Full-text available
Mass coral bleaching events have occurred on a global scale throughout the worlds tropical oceans and can result in large-scale coral mortality and degradation of coral reef communities. Coral bleaching has often been attributed to periods of above normal seawater temperatures and/or calm conditions with high levels of ultraviolet radiation. Unusua...
Chapter
Calcinus verrilli, a hermit crab endemic to Bermuda, is unusual in that it inhabits both gastropod tubes (Dendropoma spp. and Vermicularia spp.) and gastropod shells (Cerithium litteratum). In the laboratory, when given a choice between shells and tubes, neither males nor females showed a significant preference for either shelter. In a Y-maze test...
Article
Calcinus verrilli, a hermit crab endemic to Bermuda, is unusual in that it inhabits both gastropod tubes (Vermicularia spp. and Dendropoma spp.) and gastropod shells (Cerithium litteratum). It was found in both shelter types, in Five marine environments, categorized as intertidal areas, subtidal areas, "boilers", patch reefs, and rim reefs. We foun...

Network

Cited By