Climate-mediated changes in predator–prey interactions in the fossil record: a case study using shell-drilling gastropods from the Pleistocene Japan Sea

Paleobiology ◽  
2016 ◽  
Vol 42 (2) ◽  
pp. 257-268 ◽  
Author(s):  
Tomoki Chiba ◽  
Shin’ichi Sato
Keyword(s):  
Climate Change ◽  
Environmental Changes ◽  
Experimental Studies ◽  
Japan Sea ◽  
Warm Water ◽  
Predator Prey ◽  
Water Shell ◽  
Long Timescales ◽  
Molluscan Species

AbstractPaleoecological studies enhance our understanding of biotic responses to climate change because they consider long timescales not accessible through observational and experimental studies. Using predatory drillholes produced on fossil bivalve shells by carnivorous gastropods, we provide an example of how climate change affected predator–prey interactions. We quantitatively examine temporal changes in fossil molluscan assemblages and predation patterns from the Pleistocene Japan Sea, which experienced drastic environmental changes in relation to glacial–interglacial climate cycles. We found significant changes in predation patterns associated with a decline in the abundance of warm-water molluscan species. Climate-mediated fluctuations in the eustatic sea level and resultant weakening of the Tsushima Warm Current caused a decline in a warm-water shell-drilling predator, which moderated the predation pressure and size relationship between the predators and the bivalve prey. Our results indicate that climate-mediated range shifts of species in present-day and future marine ecosystems can likewise increase altered predator–prey interactions.

Predator–prey interactions and climate change

2019 ◽  
pp. 199-220 ◽  
Author(s):  
Vincent Bretagnolle ◽  
Julien Terraube
Keyword(s):  
Climate Change ◽  
Species Interactions ◽  
Experimental Studies ◽  
Trophic Levels ◽  
Generalist Predators ◽  
Top Down ◽  
Predator Prey ◽  
Key Topics ◽  
Available Information

Climate change is likely to impact all trophic levels, although the response of communities and ecosystems to it has only recently received considerable attention. Further, it is expected to affect the magnitude of species interactions themselves. In this chapter, we summarize why and how climate change could affect predator–prey interactions, then review the literature about its impact on predator–prey relationships in birds, and provide prospects for future studies. Expected effects on prey or predators may include changes in the following: distribution, phenology, population density, behaviour, morphology, or physiology. We review the currently available information concerning particular key topics: top-down versus bottom-up control, specialist versus generalist predators, functional versus numerical responses, trophic cascades and regime shifts, and lastly adaptation and selection. Finally, we focus our review on two well-studied bird examples: seabirds and raptors. Key future topics include long-term studies, modelling and experimental studies, evolutionary questions, and conservation issues.

scholarly journals Temperature alters the physiological response of spiny lobsters under predation risk

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Felipe A Briceño ◽  
Quinn P Fitzgibbon ◽  
Elias T Polymeropoulos ◽  
Iván A Hinojosa ◽  
Gretta T Pecl
Keyword(s):  
Climate Change ◽  
Predation Risk ◽  
Environmental Changes ◽  
Environmental Drivers ◽  
Climate Change Scenarios ◽  
Metabolic Rates ◽  
Energetic Costs ◽  
Predator Prey ◽  
Predator Prey Model ◽  
Spiny Lobsters

Abstract Predation risk can strongly shape prey ecological traits, with specific anti-predator responses displayed to reduce encounters with predators. Key environmental drivers, such as temperature, can profoundly modulate prey energetic costs in ectotherms, although we currently lack knowledge of how both temperature and predation risk can challenge prey physiology and ecology. Such uncertainties in predator–prey interactions are particularly relevant for marine regions experiencing rapid environmental changes due to climate change. Using the octopus (Octopus maorum)–spiny lobster (Jasus edwardsii) interaction as a predator–prey model, we examined different metabolic traits of sub adult spiny lobsters under predation risk in combination with two thermal scenarios: ‘current’ (20°C) and ‘warming’ (23°C), based on projections of sea-surface temperature under climate change. We examined lobster standard metabolic rates to define the energetic requirements at specific temperatures. Routine metabolic rates (RMRs) within a respirometer were used as a proxy of lobster activity during night and day time, and active metabolic rates, aerobic scope and excess post-exercise oxygen consumption were used to assess the energetic costs associated with escape responses (i.e. tail-flipping) in both thermal scenarios. Lobster standard metabolic rate increased at 23°C, suggesting an elevated energetic requirement (39%) compared to 20°C. Unthreatened lobsters displayed a strong circadian pattern in RMR with higher rates during the night compared with the day, which were strongly magnified at 23°C. Once exposed to predation risk, lobsters at 20°C quickly reduced their RMR by ~29%, suggesting an immobility or ‘freezing’ response to avoid predators. Conversely, lobsters acclimated to 23°C did not display such an anti-predator response. These findings suggest that warmer temperatures may induce a change to the typical immobility predation risk response of lobsters. It is hypothesized that heightened energetic maintenance requirements at higher temperatures may act to override the normal predator-risk responses under climate-change scenarios.

Midwinter breakup and jamming on the upper Saint John River: a case study

2003 ◽  
Vol 30 (1) ◽  
pp. 77-88 ◽  
Author(s):  
Spyros Beltaos ◽  
Sayed Ismail ◽  
Brian C Burrell
Keyword(s):  
Climate Change ◽  
Environmental Changes ◽  
Flood Damage ◽  
River Ice ◽  
Ice Thickness ◽  
Ice Jams ◽  
Damage Reduction ◽  
Saint John

Changing climates will likely result in more frequent midwinter ice jams along many Canadian rivers, thereby increasing the likelihood of flood damage and environmental changes. Therefore, the possibility of more frequent ice jams has to be considered during the planning of flood damage reduction measures, the design of waterway structures, and the enactment of measures to protect the environment. As a case study of midwinter jamming, four winter breakup and jamming events that occurred along an upper stretch of the Saint John River during the 1990s are described and the implications of similar midwinter jamming are discussed.Key words: breakup, river ice, climate change, ice jamming, ice thickness, winter, winter thaw.

scholarly journals Keeping ahead of floods and droughts: a case study of Sdau Kaong Commune, Cambodia

2021 ◽  
Author(s):  
◽  
Sopharo Oum
Keyword(s):  
Climate Change ◽  
Natural Hazards ◽  
Environmental Changes ◽  
Lao Pdr ◽  
Water Levels ◽  
Participatory Action ◽  
The Face ◽  
Floods And Droughts ◽  
Outstanding Question

<p>The Lower Mekong Basin covers four countries, Lao PDR, Thailand, Cambodia and Vietnam. These countries are often affected by floods and sometimes by droughts. These natural hazards silently and adversely affect people’s livelihoods in the region. In the face of future environmental changes, especially climate change and dam construction along the Mekong River, patterns of floods and droughts are more likely to exacerbate the situation. For this case study of a vulnerable commune in this setting, I developed a hybrid model of the development and complexity paradigms to both organise my research data and extend my analysis. This holistic hybrid paradigm enabled me to explore the interrelationships between natural hazards, disasters, and vulnerability, and adopt a multidisciplinary approach in which I attempt to integrate disaster risk management and climate change adaptation models to highlight problems and to propose interventions. The results obtained indicate that in the future floods and droughts are likely to be more frequent and severe and just what impact additional dams currently being planned or built will have over the control of water levels remains an outstanding question. Plans need to be made to enable people to cope with floods and droughts because these can have a hugely detrimental impact on their livelihoods including crops and personal property, people, community infrastructure and environment. Although current coping strategies are in place, disasters still occur. Based on the vulnerability context of the Sustainable Livelihoods Framework and the Pressure and Release (PAR) model, I was able to show how vulnerability is exacerbated by dissonant social, economic, and political structures. This research also proposes an integrated framework, including adaptive management and participatory action research, as a way of monitoring interventions that could possibly resolve some of the challenges.</p>

scholarly journals Responses of Indigenous People to the Climate Changes: A Case Study of the Surels of Dolakha District of Nepal

Patan Pragya ◽  
2021 ◽  
Vol 9 (02) ◽  
pp. 99-114
Author(s):  
Hari Prasad Bhattarai
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Climate Changes ◽  
Environmental Changes ◽  
Community Organization ◽  
Seasonal Migration ◽  
Cropping Pattern ◽  
Weather Patterns ◽  
Indigenous Group

This paper has examined the way the Surels, an indigenous group inhabiting in Suri village of Dolakha district, perceive climate change and also has attempted to document their adaptive strategies to the changes brought about by climate change and global warming. These peoples have developed uniquely insightful ways of observing, interpreting, and responding to the impacts of climate changes through interacting and closely linking their lives with their surroundings. They clearly linked climate change with the changes in the weather patterns over the years indicating erratic rainfall patterns, advancing monsoon, advancing summer and spring, shorter and warmer winter, drier and hotter summer. This paper argues that these people observe and encounter climate and environmental changes immediately and use traditional knowledge and survival skills to adapt to these changes as they occurred. They have devised, though it is not well documented, useful coping mechanisms—modifying cropping pattern and crop types, community-based afforestation and forest management initiatives, improve water management, involvement of community organization in water management and seasonal migration to India- to respond and reduce climate induced risks and impacts which have enabled them to achieve stable livelihoods in their environment.

scholarly journals Use of Olive Oil and Warm Water in Bathing Intervention in Preventing Risk of Skin Integrity Damage in Total Care Patients With Chronic Disease: A Case Study

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Maria Pele ◽  
Agung Waluyo
Keyword(s):  
Chronic Disease ◽  
Olive Oil ◽  
Environmental Changes ◽  
Care Patient ◽  
Warm Water ◽  
Hospitalization Costs ◽  
Skin Integrity ◽  
Total Care ◽  
Calming Effect

ABSTRACTChronic disease in total care patients can lead the damage of skin integrity. The skin integrity damage can be affected by various patient’s conditions, including physical immobilization, treatment, changes in skin turgor, immune decline, age, environmental changes and the effects of the diseases. Its can make the complications of patient condition such as infection so that can causes the longer length of stay and higher of hospitalization costs. The aim of this paper is to identified  use of olive oil and warm water in bathing intervention in preventing risk of skin integrity damage in total care patients with chronic disease. This is a case study in one total care patient with chronic disease. Skin integrity assesed by Braden score and patient condition assesed by reseacher observations. Bathing the patient using olive oil and warm water has a calming effect on the patient and preventing damage to the integrity of the skin. Use of olive oil and warm water in bathing intervention can preventing risk of skin integrity damage in total care patients with chronic disease.ABSTRAKPenyakit kronis pada pasien dengan perawatan total dapat menyebabkan kerusakan integritas kulit. Kerusakan integritas kulit dapat dipengaruhi oleh berbagai kondisi pasien, termasuk imobilisasi fisik, perawatan, perubahan turgor kulit, penurunan kekebalan, usia, perubahan lingkungan dan efek penyakit. Hal ini dapat menyebabkan komplikasi pada kondisi pasien seperti infeksi sehingga dapat menyebabkan lama hari rawat lebih lama dan biaya rawat inap yang lebih tinggi.  Tujuan dari tulisan ini adalah untuk mengidentifikasi penggunaan minyak zaitun dan air hangat dalam intervensi memandkani dalam mencegah risiko kerusakan integritas kulit pada pasien perawatan total dengan penyakit kronis.  Ini adalah studi kasus pada satu pasien perawatan total dengan penyakit kronis. Integritas kulit dinilai oleh Braden score dan kondisi pasien dinilai dengan pengamatan peneliti. Memandikan pasien dengan minyak zaitun dan air hangat memiliki efek menenangkan pada pasien dan mencegah kerusakan integritas kulit.  Penggunaan minyak zaitun dan air hangat dalam intervensi mandi dapat mencegah risiko kerusakan integritas kulit pada pasien perawatan total dengan penyakit kronis. 

scholarly journals Keeping ahead of floods and droughts: a case study of Sdau Kaong Commune, Cambodia

2021 ◽  
Author(s):  
◽  
Sopharo Oum
Keyword(s):  
Climate Change ◽  
Natural Hazards ◽  
Environmental Changes ◽  
Lao Pdr ◽  
Water Levels ◽  
Participatory Action ◽  
The Face ◽  
Floods And Droughts ◽  
Outstanding Question

<p>The Lower Mekong Basin covers four countries, Lao PDR, Thailand, Cambodia and Vietnam. These countries are often affected by floods and sometimes by droughts. These natural hazards silently and adversely affect people’s livelihoods in the region. In the face of future environmental changes, especially climate change and dam construction along the Mekong River, patterns of floods and droughts are more likely to exacerbate the situation. For this case study of a vulnerable commune in this setting, I developed a hybrid model of the development and complexity paradigms to both organise my research data and extend my analysis. This holistic hybrid paradigm enabled me to explore the interrelationships between natural hazards, disasters, and vulnerability, and adopt a multidisciplinary approach in which I attempt to integrate disaster risk management and climate change adaptation models to highlight problems and to propose interventions. The results obtained indicate that in the future floods and droughts are likely to be more frequent and severe and just what impact additional dams currently being planned or built will have over the control of water levels remains an outstanding question. Plans need to be made to enable people to cope with floods and droughts because these can have a hugely detrimental impact on their livelihoods including crops and personal property, people, community infrastructure and environment. Although current coping strategies are in place, disasters still occur. Based on the vulnerability context of the Sustainable Livelihoods Framework and the Pressure and Release (PAR) model, I was able to show how vulnerability is exacerbated by dissonant social, economic, and political structures. This research also proposes an integrated framework, including adaptive management and participatory action research, as a way of monitoring interventions that could possibly resolve some of the challenges.</p>

Climate change cumulative impacts on deep-sea ecosystems

2020 ◽  
pp. 161-182
Author(s):  
Nadine Le Bris ◽  
Lisa A. Levin
Keyword(s):  
Climate Change ◽  
Deep Sea ◽  
Environmental Changes ◽  
Temporal Dynamics ◽  
Cold Water ◽  
Experimental Studies ◽  
Deep Ocean ◽  
Cumulative Impacts ◽  
Physiological Limits ◽  
Resource Decline

Climate models report that the environmental changes resulting from excess CO2 and heat absorption by the ocean already reach many deep-ocean margins, basins, and seas. Decadal monitoring programmes have confirmed significant warming and deoxygenation trends down to the abyss, which combine with CO2-enriched, more corrosive conditions. Although the resolution of current models does not account for the typical mesoscale seafloor heterogeneity, cumulative impacts on biodiversity and productivity hotpots are anticipated. The growing interest in deep-sea resource exploitation has shed light on the lack of knowledge about current climate-driven disturbance and potential cumulative threats at great depth. Assessing the sensitivity of deep-sea ecosystems to temperature increase combined with oxygen and resource decline is emerging as a growing challenge. The natural patchiness of deep-seafloor habitats and associated deep-sea diversity patterns inform about environmental constraints over space, but the temporal dynamics of these systems is not well known. Experimental studies are required to assess the physiological limits and explore the adaptation and acclimation potential of foundation species exposed to various forms of abiotic stress. The case of cold-water corals is particularly illustrative of the potential synergistic effects of climate stressors, including warming, acidification, deoxygation, and reduced food availability. Addressing ecosystem vulnerability also requires dedicated monitoring efforts to identify the current and future drivers of climate-change impacts on deep-sea habitats. United Nations policy objectives for protected high-sea biodiversity and healthy oceans and seas drive the momentum towards better climate-change forecasting over the ocean-depth range and related integrated observing strategies.

scholarly journals Youth-Led Participatory Video as a Strategy to Enhance Inuit Youth Adaptive Capacities for Dealing with Climate Change

ARCTIC ◽  
2015 ◽  
Vol 68 (4) ◽  
pp. 486 ◽  
Author(s):  
Joanna Petrasek MacDonald ◽  
James Ford ◽  
Ashlee Cunsolo Willox ◽  
Claudia Mitchell ◽  
Konek Productions ◽  
...  
Keyword(s):  
Climate Change ◽  
Protective Factors ◽  
Environmental Changes ◽  
Community Members ◽  
Indigenous Youth ◽  
Participatory Video ◽  
Youth Population ◽  
Depth Interviews ◽  
Impacts Of Climate Change

Rapid climatic and environmental changes experienced throughout the Canadian North are having significant impacts on the lives of Inuit, with implications for the future of the large Inuit youth population. Within the adaptation research and practitioner community, youth voices, perspectives, and involvement are essential in ensuring representative and sustainable adaptation strategies. This paper examines the potential of youth-led participatory video (PV) as a strategy to foster known protective factors that underpin the resilience of youth and their capacity to adapt to various stresses, including impacts of climate change. The work draws on a case study from the Inuit community of Rigolet, Nunatsiavut, Labrador, Canada, where a two-week PV workshop was conducted with seven youth and followed by in-depth interviews with participants and community members. The findings show that PV may be a pathway to greater adaptive capacities because the process connects to known protective factors that enhance resilience of circumpolar indigenous youth. PV also shows promise as a strategy to engage youth in sharing insights and knowledge, connect generations, and involve young Inuit in planning and decision making in general.  

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