scholarly journals LuMinAves: cooperative research and mitigation of light pollution impacts in seabirds

2021 ◽  
Vol 23 (1) ◽  
pp. 33-41
Author(s):  
Elizabeth Atchoi ◽  
Airam Rodríguez ◽  
Tânia Pipa ◽  
Carlos Silva ◽  
Azucena Martín ◽  
...  
Keyword(s):  
North Atlantic ◽  
Interdisciplinary Approach ◽  
Light Pollution ◽  
Human Populations ◽  
White Led ◽  
Negative Effects ◽  
Cooperative Research ◽  
The North ◽  
Natural Landscapes ◽  
Pollution Impacts

Any efforts to conduct a sustainable management of urban and natural landscapes benefit from an interdisciplinary approach and active collaboration between actors, thus increasing the feasibility and effectiveness of the proposed actions. With the emergent transition of urban lighting to white LED technology, such shifts can bring a variety of negative effects to these environments, thus such actions should be applied taking into account as broad a knowledge set as available. These are often fragmented and incoherent thus in need of actions which unite them into usable and common tools. In the North Atlantic region of Macaronesia, a project has been implemented which uses the negative effects light pollution has on seabird populations as a base to effect changes in the regional lighting schemes, decreasing light pollution and increasing the sustainability of the current LED transition, improving practices and awareness, to the benefit of both seabirds and human populations alike.

scholarly journals Revisiting the humid Roman hypothesis: novel analyses depict oscillating patterns

2011 ◽  
Vol 7 (4) ◽  
pp. 2355-2389 ◽  
Author(s):  
B. J. Dermody ◽  
H. J. de Boer ◽  
M. F. P. Bierkens ◽  
S. L. Weber ◽  
M. J. Wassen ◽  
...  
Keyword(s):  
North Atlantic ◽  
Large Scale ◽  
Mediterranean Climate ◽  
Eastern Mediterranean ◽  
Low Frequency ◽  
Interdisciplinary Approach ◽  
Archaeological Site ◽  
Roman Period ◽  
Spatial And Temporal Patterns ◽  
The North

Abstract. Previous studies have proposed that potential vegetation in the Mediterranean maintained a wetter climate during the Roman Period until the initiation of large scale deforestation. The reduction in evapotranspirative fluxes associated with deforestation is suggested to have caused climatic aridification leading to the establishment of the present-day Mediterranean climate. There is also evidence to indicate that during the Roman Period Mediterranean climate was influenced by low frequency fluctuations in sea level pressure over the North Atlantic, termed here: the Centennial North Atlantic Oscillation (CNAO). In order to understand the importance of each of these mechanisms and disentangle their respective signals in the proxy record, we have employed an interdisciplinary approach that exploits a range of tools and data sources. An analysis of archaeological site distribution and historical texts demonstrate that climate did not increase in aridity since the Roman Period. Using an Earth system model of intermediate complexity prescribed with a reconstruction of ancient deforestation, we find that Mediterranean climate was insensitive to deforestation in the Late Holocene. A novel analysis of a composite of proxy indicators of climatic humidity depicts spatial and temporal patterns consistent with the CNAO. The link between the CNAO during the Roman Period and climatic humidity signals manifest in our composite analysis are demonstrated using a modelling approach. Finally, we present evidence indicating that fluctuations in the CNAO contributed to triggering a societal tipping point in the Eastern Mediterranean at the end of the Roman Period.

scholarly journals Impacts of Tropical Cyclones on Longleaf Pine Ecosystems of Florida: Tropical Cyclogenesis, Landfall Frequencies, and Climate Change

2021 ◽  
Vol 9 ◽  
Author(s):  
Frank S. Gilliam
Keyword(s):  
Climate Change ◽  
Tropical Cyclones ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Longleaf Pine ◽  
Terrestrial Ecosystem ◽  
Tropical Cyclogenesis ◽  
Human Populations ◽  
The North ◽  
The North Atlantic

Tropical storms and hurricanes (collectively hereafter, tropical cyclones) are among the most destructive forces in nature. These threats are of particular concern to human populations and ecosystems of coastal areas of the southeastern United States, most especially in the State of Florida. This review begins with an overview of the effects of tropical cyclones on Florida’s most conspicuous terrestrial ecosystem—longleaf pine. Environmental factors leading to tropical cyclogenesis will also be reviewed, with a specific focus on (1) landfall history in Florida, and (2) the potential relationship between climate change and the frequency/intensity of tropical cyclones in the North Atlantic Ocean. Given its geographical distribution, it is not surprising that longleaf pine has long been impacted by tropical cyclones of the North Atlantic. Tropical cyclones are formed from a complex combination of meteorological conditions, driven initially by the release of excess heat from the surface waters of the ocean, along with an unstable atmosphere comprising air temperatures decreasing and wind speeds increasing with altitude. Among the coastal counties from Texas to Maine, those of Florida have experienced by far the highest frequency of tropical cyclones, especially the southern tip of peninsular Florida, with its most populous county (Miami-Dade) receiving 25 hits from 1900 to 2010, second only to Monroe County (32 hits) during that period. Frequencies of all categories of cyclones have increased significantly from 1850 to the present. Cyclone frequencies were significantly correlated with increases in air and ocean temperatures, both of which have increased over the past, suggesting a causal relationship with anthropogenic climate change. Of future concern is how increases in frequencies and intensities of tropical cyclones will negatively affect the structure and function of these ecologically and economically important longleaf pine ecosystems.

scholarly journals Environmental changes, climate and anthropogenic impact in southern-eastern Tunisia during the last 8 kyr

2016 ◽  
Author(s):  
Sahbi Jaouadi ◽  
Vincent Lebreton ◽  
Viviane Bout-Roumazeilles ◽  
Giuseppe Siani ◽  
Rached Lakhdar ◽  
...  
Keyword(s):  
North Atlantic ◽  
Late Holocene ◽  
Environmental Changes ◽  
Climatic Variability ◽  
Classical Antiquity ◽  
Human Populations ◽  
Desert Ecosystems ◽  
The North ◽  
The North Atlantic ◽  
The Mediterranean

Abstract. Pollen and clay mineralogical analyses of a Holocene sequence from Sebkha Boujmel (southern Tunisia) traces the climatic and environmental dynamics in the lower arid bioclimatic zone over the last 8000 years. During the Mid- to Late Holocene transition, between 8 and 3 ka, a succession of five wet/dry oscillations is recorded. An intense arid event occurs between 5.7 and 4.6 ka. This episode marks the onset of a long-term aridification trend with a progressive retreat of Mediterranean woody xerophytic vegetation and of grass steppes. It ends with the establishment of pre-desert ecosystems around 3 ka. The millennial-scale climate change recorded in the data from Sebkha Boujmel is consistent with records from the south and east Mediterranean, as well as with climatic records from the desert region for the end of the African Humid Period (AHP). Eight centennial climatic events are recorded at Sebkha Boujmel and these are contemporary with those recorded in the Mediterranean and in the Sahara. They indicate a clear coupling between the southern Mediterranean and the Sahara before 3 ka. The event at 4.2 ka is not evidenced and the link between events recorded in Sebkha Boujmel and the North Atlantic Cooling events is clearer from 3 ka onwards. These variations indicate the importance of climatic determinism in the structuring of landscapes, with the establishment of the arid climatic conditions of the Late Holocene. It is only from 3 ka onwards that the dynamic of plant associations is modified by both human activity and climatic variability. The climatic episodes identified during the historic period indicate strong regionalisation related to the differential impact of the North Atlantic Oscillation (NAO) and the Mediterranean Oscillation (MO) on the Mediterranean basin. The local human impact on regional ecosystems is recorded in the form of episodes of intensification of pastoral and/or agricultural activities. The development of olive production and of several taxa associated with agriculture attest to increasing sedentism among human populations during Classical Antiquity. The significant increase in Artemisia (wormwood) between 1.1 and 0.8 ka (850–1150 AD) is linked to intensive pastoral activity, associated with heightened interannual and/or seasonal climatic instability. A complete re-shaping of the landscape is recorded during the 20th century. The remarkable expansion of the olive tree, and the deterioration of regional ecosystems with the spread of desert species, is linked to recent local socio-economic changes in Tunisia.

scholarly journals Environmental changes, climate and anthropogenic impact in south-east Tunisia during the last 8 kyr

2016 ◽  
Vol 12 (6) ◽  
pp. 1339-1359 ◽  
Author(s):  
Sahbi Jaouadi ◽  
Vincent Lebreton ◽  
Viviane Bout-Roumazeilles ◽  
Giuseppe Siani ◽  
Rached Lakhdar ◽  
...  
Keyword(s):  
North Atlantic ◽  
Late Holocene ◽  
Environmental Changes ◽  
Climatic Variability ◽  
Classical Antiquity ◽  
Human Populations ◽  
Desert Ecosystems ◽  
The North ◽  
The North Atlantic ◽  
The Mediterranean

Abstract. Pollen and clay mineralogical analyses of a Holocene sequence from Sebkha Boujmel (southern Tunisia) trace the climatic and environmental dynamics in the lower arid bioclimatic zone over the last 8000 years. During the mid- to late Holocene transition, between ca. 8 and 3 ka BP, a succession of five wet–dry oscillations is recorded. An intense arid event occurs between ca. 5.7 and 4.6 ka BP. This episode marks the onset of a long-term aridification trend with a progressive retreat of Mediterranean woody xerophytic vegetation and of grass steppes. It ends with the establishment of pre-desert ecosystems around 3 ka BP. The millennial-scale climate change recorded in the data from Sebkha Boujmel is consistent with records from the south and east Mediterranean, as well as with climatic records from the desert region for the end of the African Humid Period (AHP). Eight centennial climatic events are recorded at Sebkha Boujmel and these are contemporary with those recorded in the Mediterranean and in the Sahara. They indicate a clear coupling between the southern Mediterranean and the Sahara before 3 ka BP. The event at 4.2 ka BP is not evidenced and the link between events recorded in Sebkha Boujmel and the North Atlantic cooling events is clearer from ca. 3 ka BP onwards. These variations indicate the importance of climatic determinism in the structuring of landscapes, with the establishment of the arid climatic conditions of the late Holocene. It is only from ca. 3 ka BP onwards that the dynamic of plant associations is modified by both human activity and climatic variability. The climatic episodes identified during the historic period indicate strong regionalisation related to the differential impact of the North Atlantic Oscillation (NAO) and the Mediterranean Oscillation (MO) on the Mediterranean Basin. The local human impact on regional ecosystems is recorded in the form of episodes of intensification of pastoral and/or agricultural activities. The development of olive production and of several taxa associated with agriculture attest to increasing sedentism among human populations during classical antiquity. The significant increase in Artemisia (wormwood) between ca. 1.1 and 0.8 ka BP (850–1150 AD) is linked to intensive pastoral activity, associated with heightened interannual and/or seasonal climatic instability. A complete reshaping of the landscape is recorded during the 20th century. The remarkable expansion of the olive tree, and the deterioration of regional ecosystems with the spread of desert species, is linked to recent local socio-economic changes in Tunisia.

The Currents of the North Atlantic

1892 ◽  
Vol 34 (872supp) ◽  
pp. 13940-13941
Author(s):  
Richard Beynon
Keyword(s):  
North Atlantic ◽  
The North ◽  
The North Atlantic

NATO adaptation to current challenges and mechanisms of Ukraine’s cooperation with the North Atlantic Treaty Organization

2019 ◽  
pp. 73-81
Author(s):  
Oleh Poshedin
Keyword(s):  
North Atlantic ◽  
Task Force ◽  
Response Force ◽  
Cyber Attack ◽  
Adaptation Measures ◽  
Joint Force ◽  
Security Environment ◽  
The North ◽  
The North Atlantic ◽  
Area Of Influence

The purpose of the article is to describe the changes NATO undergoing in response to the challenges of our time. Today NATO, as a key element of European and Euro-Atlantic security, is adapting to changes in the modern security environment by increasing its readiness and ability to respond to any threat. Adaptation measures include the components required to ensure that the Alliance can fully address the security challenges it might face. Responsiveness NATO Response Force enhanced by developing force packages that are able to move rapidly and respond to potential challenges and threats. As part of it, was established a Very High Readiness Joint Task Force, a new Allied joint force that deploy within a few days to respond to challenges that arise, particularly at the periphery of NATO’s territory. NATO emphasizes, that cyber defence is part of NATO’s core task of collective defence. A decision as to when a cyber attack would lead to the invocation of Article 5 would be taken by the North Atlantic Council on a case-by-case basis. Cooperation with NATO already contributes to the implementation of national security and defense in state policy. At the same time, taking into account that all decision-making in NATO based on consensus, Ukraine’s membership in the Alliance quite vague perspective. In such circumstances, in Ukraine you often can hear the idea of announcement of a neutral status. It is worth reminding that non-aligned status did not save Ukraine from Russian aggression. Neutral status will not accomplish it either. All talks about neutrality and the impossibility of Ukraine joining NATO are nothing but manipulations, as well as recognition of the Ukrainian territory as Russian Federation area of influence (this country seeks to sabotage the Euro-Atlantic movement of Ukraine). Think about it, Moldova’s Neutrality is enshrined in the country’s Constitution since 1994. However, this did not help Moldova to restore its territorial integrity and to force Russia to withdraw its troops and armaments from Transnistria.

Analysis of the ways of improvement of Ukraine – NATO cooperation on cybersecurity issues

2020 ◽  
Vol 10 (2) ◽  
pp. 11-15
Author(s):  
Volodymyr Shypovskyi ◽  
Volodymyr Cherneha ◽  
Serhiy Marchenkov
Keyword(s):  
Political Parties ◽  
North Atlantic ◽  
Lessons Learned ◽  
Cyber Warfare ◽  
The North ◽  
Collective Defense ◽  
Cyber Space ◽  
The Russian Federation ◽  
Modern Warfare ◽  
E Mail

Recent events in Ukraine have shown that, along with the advancement of information technology, methods of conducting modern warfare are being enhanced. Cyberspace is deliberately used by the Russian Federation to commit cyber warfare against Ukraine. Therefore, in order to address their influence effectively, it is important not only successfully deal with its consequences but also to foresee the potential adversaryʼs actions by analyzing their previous operations and incorporating the lessons learned by other countries. Across the globe, including Ukraine, the issue of information security and cyberattacks has become exceedingly urgent. Everybody is aware of the ongoing attacks on information networks of various government agencies and energy firms, cyberattacks on e-mail networks of political parties and organizations around the world. Likewise, despite the steadily growing numbers, cyberattack cases against the individuals and private businesses are not reported as widely as they occur. As a result, The North Atlantic Alliance countries began tackling the issue of cyberthreats much earlier than Ukraine. Consequently, NATO and its allies rely on powerful and robust cyber defenses to ensure the Alliance's core tasks of collective defense. The article discusses methods and strategies for providing cyber defense in NATO member states and recommends ways to increase the level of protection in the state's cyber space, as part of Ukraineʼs national security and defense domain.

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