Climate change is affecting altitudinal migrants and hibernating species

Calendar date of the beginning of the growing season at high altitude in the Colorado Rocky Mountains is variable but has not changed significantly over the past 25 years. This result differs from growing evidence from low altitudes that climate change is resulting in a longer growing season, earlier migrations, and earlier reproduction in a variety of taxa. At our study site, the beginning of the growing season is controlled by melting of the previous winter's snowpack. Despite a trend for warmer spring temperatures the average date of snowmelt has not changed, perhaps because of the trend for increased winter precipitation. This disjunction between phenology at low and high altitudes may create problems for species, such as many birds, that migrate over altitudinal gradients. We present data indicating that this already may be true for American robins, which are arriving 14 days earlier than they did in 1981; the interval between arrival date and the first date of bare ground has grown by 18 days. We also report evidence for an effect of climate change on hibernation behavior; yellow-bellied marmots are emerging 38 days earlier than 23 years ago, apparently in response to warmer spring air temperatures. Migrants and hibernators may experience problems as a consequence of these changes in phenology, which may be exacerbated if climate models are correct in their predictions of increased winter snowfall in our study area. The trends we report for earlier formation of permanent snowpack and for a longer period of snow cover also have implications for hibernating species.

Insect herbivory, plant defense, and early Cenozoic climate change

Insect damage on fossil leaves from the Central Rocky Mountains, United States, documents the response of herbivores to changing regional climates and vegetation during the late Paleocene (humid, warm temperate to subtropical, predominantly deciduous), early Eocene (humid subtropical, mixed deciduous and evergreen), and middle Eocene (seasonally dry, subtropical, mixed deciduous and thick-leaved evergreen). During all three time periods, greater herbivory occurred on taxa considered to have short rather than long leaf life spans, consistent with studies in living forests that demonstrate the insect resistance of long-lived, thick leaves. Variance in herbivory frequency and diversity was highest during the middle Eocene, indicating the increased representation of two distinct herbivory syndromes: one for taxa with deciduous, palatable foliage, and the other for hosts with evergreen, thick-textured, small leaves characterized by elevated insect resistance. Leaf galling, which is negatively correlated with moisture today, apparently increased during the middle Eocene, whereas leaf mining decreased.

Tree rings, carbon dioxide, and climatic change

Tree rings have been used in various applications to reconstruct past climates as well as to assess the effects of recent climatic and environmental change on tree growth. In this paper we briefly review two ways that tree rings provide information about climate change and CO2: (i) in determining whether recent warming during the period of instrumental observations is unusual relative to prior centuries to millennia, and thus might be related to increasing greenhouse gases; and (ii) in evaluating whether enhanced radial growth has taken place in recent decades that appears to be unexplained by climate and might instead be due to increasing atmospheric CO2 or other nutrient fertilization. It is found that a number of tree-ring studies from temperature-sensitive settings indicate unusual recent warming, although there are also exceptions at certain sites. The present tree-ring evidence for a possible CO2 fertilization effect under natural environmental conditions appears to be very limited.

Abrupt climate change and thermohaline circulation: Mechanisms and predictability

The ocean's thermohaline circulation has long been recognized as potentially unstable and has consequently been invoked as a potential cause of abrupt climate change on all timescales of decades and longer. However, fundamental aspects of thermohaline circulation changes remain poorly understood.

Sensitivity and rapidity of vegetational response to abrupt climate change

Rapid climate change characterizes numerous terrestrial sediment records during and since the last glaciation. Vegetational response is best expressed in terrestrial records near ecotones, where sensitivity to climate change is greatest, and response times are as short as decades.

Recommendations for Creating and Implementing Climate Change Mitigation Strategies for Municipalities

The effects of climate change are beginning to show themselves globally and not enough is being done to counteract these changes. Institutional action is a necessity, and municipalities have an opportunity to fill this void by developing mitigation strategies that will reduce greenhouse gas emissions. This report critically reviews the municipal climate action plans for Portland, Oregon; Boulder, Colorado; and Toronto, Ontario and provides recommendations for other municipalities who wish to create and implement climate change mitigation plans.

EU Policy on Climate Change Mitigation since Copenhagen and the Economic Crisis. CEPS Working Document No. 380, 5 March 2013

The EU has long assumed leadership in advancing domestic and international climate change policy. While pushing its partners in international negotiations, it has led the way in implementing a host of domestic measures, including a unilateral and legally binding target, an ambitious policy on renewable energy and a strategy for low-carbon technology deployment. The centrepiece of EU policy, however, has been the EU Emissions Trading System (ETS), a cap-and-trade programme launched in 2005. The ETS has been seen as a tool to ensure least-cost abatement, drive EU decarbonisation and develop a global carbon market. After an initial review and revision of the ETS, to come into force in 2013, there was a belief that the new ETS was ‘future-proof’, meaning able to cope with the temporary lack of a global agreement on climate change and individual countries’ emission ceilings. This confidence has been shattered by the simultaneous ‘failure’ of Copenhagen to deliver a clear prospect of a global (top-down) agreement and the economic crisis. The lack of prospects for national caps at the international level has led to a situation whereby many member states hesitate to pursue ambitious climate change policies. In the midst of this, the EU is assessing its options anew. A number of promising areas for international cooperation exist, all centred on the need to ‘raise the ambition level’ of GHG emission reductions, notably in aviation and maritime, short-lived climate pollutions, deforestation, industrial competitiveness and green growth. Public policy issues in the field of technology and its transfer will require more work to identify real areas for cooperation.

Climate Change: Balancing economic and environmental concerns. CEPS Commentary, 3 October 2014

In surveying the portfolio for climate change assigned to Commissioner-designate Arias Cañete, Andrei Marcu finds in this CEPS Commentary that the approach proposed in the European Commission’s January 2014 package offers a sound basis on which to proceed overall, but he specifies that it needs to be put in a context where the causes and symptoms are correctly identified. He singles out timing and governance as other important elements and discusses their practical implications.

Adapting to climate change from a regional perspective: in search of a requisite policy and legal framework. Jean Monnet Occasional Paper No. 8/2014

This paper aims to identify the Mediterranean States’ potential in adopting a regional strategy on climate change adaptation. The author proposes a Mediterranean Strategy on Adaptation to Climate Change as the first step to a political/legal regional approach to climate change issues that would supplement the multilateral process under the United Nations Framework Convention on Climate Change and the Kyoto Protocol. According to the author such a strategy would enhance cooperation between the EU and other Mediterranean states in various ways. The experience of the EU in regulating climate change and its ever growing knowledge-base on its impacts could serve to guide the other Mediterranean states’ and help bridge their knowledge-base gap on the topic. On the other hand, the support and cooperation of the EU’s Mediterranean partners would provide an opportunity for the EU to address better the challenges the climate change threatens to bring in its southernmost regions. The strategy could eventually even pave the way for the very first regional treaty on climate change that could be negotiated under the auspices of the Regional Seas Programme and the Union for the Mediterranean.

Financial risks and opportunities in the time of climate change. Bruegel Policy Brief ISSUE 2016/02 APRIL 2016

Real economic imbalances can lead to financial crisis. The current unsustainable use of our environment is such an imbalance. Financial shocks can be triggered by either intensified environmental policies, cleantech breakthroughs (both resulting in the stranding of unsustainable assets), or the economic costs of crossing ecological boundaries (eg floods and droughts due to climate change). Financial supervisors and risk managers have so far paid little attention to this ecological dimension, allowing systemic financial imbalances resulting from ecological pressures to build up. Inattention also leads to missed economic and financial opportunities from the sustainability transition.

Innovation and Development in the Age of Climate Change Adaptation: Open or Closed?

Change Adaptation: Open or Closed? Paper read at the Second African International Economic Law Network Conference, 7-8 March 2013, Wits School of Law, Johannesburg, South Africa. In a time of rapid convergence of technologies, goods, services, hardware, software, the traditional classifications that informed past treaties fail to remove legal uncertainty, or advance welfare and innovation. As a result, we turn our attention to the role and needs of the public domain at the interface of existing intellectual property rights and new modes of creation, production and distribution of goods and services. The concept of open culture would have it that knowledge should be spread freely and its growth should come from further developing existing works on the basis of sharing and collaboration without the shackles of intellectual property. Intellectual property clauses find their way into regional, multilateral, bilateral and free trade agreements more often than not, and can cause public discontent and incite unrest. Many of these intellectual property clauses raise the bar on protection beyond the clauses found in the WTO Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS). In this paper we address the question of the protection and development of the public domain in service of open innovation in accord with Article 15 of the International Covenant on Economic, Social and Cultural Rights (ICESCR) in light of the Objectives (Article 7) and Principles (Article 8) set forth in TRIPS. Once areas of divergence and reinforcement between the intellectual property regime and human rights have been discussed, we will enter into options that allow for innovation and prosperity in the global south. We then conclude by discussing possible policy developments.

Addressing climate change under preferential trade agreements: Towards alignment of carbon standards under the Transatlantic Trade and Investment Partnership

With its wide coverage of economic spheres and the variety of trade and investment measures currently under negotiation, the Transatlantic Trade and Investment Partnership opens windows of opportunity for advancing action on climate change. We examine possible avenues and international trade law implications for an alignment of carbon-related standards between the EU and the US. We compare EU and US carbon emissions standards for cars and argue that negotiators should strive for a mutual recognition of their equivalence for a transitional period, while pursuing the goal of full harmonization at the level of the highest standards of two parties at some date in the future. This could be a way to balance between economic and environmental interests and harness economic incentives for the benefit of climate.