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Livelihoods and Poverty Chapter 13
13
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ill force poor people from transient into chronic poverty and create
new poor (medium confidence).
The complex interactions among weather events and climate, dynamic
livelihoods, multidimensional poverty and deprivation, and persistent
inequalities, including gender inequalities, create an ever-shifting context
of risk. The SREX concluded that climate change, climate variability, and
extreme events synergistically add on to and often reinforce other
environmental, social, and political calamities (IPCC, 2012a). Despite
the recognition of these complex interactions, the literature shows no
single conceptual framework that captures them concurrently, and few
studies exist that overlay gradual climatic shifts or rapid-onset events
onto livelihood risks. Hence, explicit attention to how livelihood dynamics
interact with climatic and non-climatic stressors is useful for identifying
processes that push poor and vulnerable people onto undesirable
trajectories, trap them in destitution, or facilitate pathways toward
enhanced well-being. Figure 13-3 illustrates these dynamics as well as
critical thresholds in livelihood trajectories.
13.2. Assessment of Climate Change Impacts
on Livelihoods and Poverty
This section reviews the evidence and agreement about the relationships
among climate change, livelihoods, poverty, and inequality. Building on
deductive reasoning and theorized linkages about these dynamic
relationships, this section draws on a wide range of empirical case
studies and simulations to illustrate linkages across multiple scales,
contexts, and social and environmental processes and to assess impacts
of climate change. Although cases of observed impacts often rely on
qualitative data and at times lack methodological clarity in terms of
detection and attribution, they provide a vital evidence base for
conveying these complex relationships. This section first describes
observed impacts to date (Section 13.2.1) and then projected risks and
impacts (Section 13.2.2).
13.2.1. Evidence of Observed Climate Change Impacts
on Livelihoods and Poverty
Weather events and climate affect the lives and livelihoods of millions
of poor people (IPCC, 2012b). Even minor changes in precipitation
amount or temporal distribution, short periods of extreme temperatures,
or localized strong winds can harm livelihoods (Douglas et al., 2008;
Ostfeld, 2009; Midgley and Thuiller, 2011; Bele et al., 2013; Bryan et al.,
2013). Many such events remain unrecognized given that standard
climate observations typically report precipitation or temperature by
month, season, or year, thus obscuring changes that shape decision
making, for instance, in agriculture (Tennant and Hewitson, 2002;
Barron et al., 2003; Usman and Reason, 2004; Douglas et al., 2008;
Lacombe et al., 2012; Salack et al., 2012). This difficulty in detection and
attribution is compounded by a lack of long-term continuous and dense
networks of climate data in many LICs (UNECA, 2011). Felt experiences
of events such as drought, as shown among the Sumbanese in Eastern
Indonesia through phenomenological research on perceptions of
climatic phenomena, such as shade and dew (Orr et al., 2012), further
add to the complexity.
13.2.1.1. Impacts on Livelihood Assets and Human Capabilities
Climate change, climate variability, and extreme events interact with
numerous aspects of people’s livelihoods. This section presents empirical
evidence of impacts on natural, physical, financial, human, and social
and cultural assets (see also Chapters 22 to 29). Impacts on access to
assets, albeit important, are poorly documented in the literature, as are
impacts on power relations and active struggles in designing effective
and relational livelihood arrangements.
Weather events and climate affect natural assets on which certain
livelihoods depend directly, such as rivers, lakes, and fish stocks (robust
evidence; Thomas et al., 2007; Nelson and Stathers, 2009; Osbahr et al.,
2010; Bunce et al., 2010a,b; D’Agostino and Sovacool, 2011; see also
Chapters 3, 4, 5, 6, 30). During the 20th century, water temperatures
increased and winds decreased in Lake Tanganyika (Adrian et al., 2009;
Verburg and Hecky, 2009; Tierney et al., 2010). Since the late 1970s, a
drop in primary production and fish catches, a key protein source, has
been observed, and climate change may exceed the effects of overfishing
and other human impacts in this area (O’Reilly et al., 2003). The Middle
East and North Africa (MENA) face dwindling water resources due to
less precipitation and rising temperatures combined with mounting
water demand due to population and economic growth (Tekken and
Kropp, 2012), resulting in rapidly decreasing water availability that, in
2025, could be 30 to 70% less per person (Sowers et al., 2011). In MENA
(Sowers et al., 2011), the Andes and Himalayas (Orlove, 2009), the
Caribbean (Cashman et al., 2010), Australia (Alston, 2011), and in cities
(Satterthwaite, 2011), policy allocation often favors more affluent
consumers, at the expense of less powerful rural and/or poor users.
Weather events and climate also erode farming livelihoods (see Chapters
7, 9), via declining crop yields (Hassan and Nhemachena, 2008; Apata
et al., 2009; Sissoko et al., 2011; Sietz et al., 2012; Li et al., 2013), at times
compounded by increased pathogens, insect attacks, and parasitic weeds
(Stringer et al., 2007; Byg and Salick, 2009), and less availability of and
access to non-timber forest products (Hertel and Rosch, 2010; Nkem et
al., 2012) and medicinal plants and biodiversity (Van Noordwijk, 2010).
For agropastoral and mixed crop-livestock livelihoods, extreme high
temperatures threaten cattle (Hahn, 1997; Thornton et al., 2007; Mader,
2012; Nesamvuni et al., 2012); in Kenya, for instance, people may shift
from dairy to beef cattle and from sheep to goats (Kabubo-Mariara, 2008).
The most extreme form of erosion of natural assets is the complete
disappearance of people’s land on islands and in coastal regions
(McGranahan et al., 2007; Solomon et al., 2009), exacerbating livelihood
risks due to loss of economic and social assets (see Chapters 5, 29; Perch
and Roy, 2010). Densely populated coastal cities with high poverty such
as Alexandria and Port Said in Egypt (El-Raey et al., 1999), Cotonou in
Benin (Dossou and Glehouenou-Dossou, 2007), and Lagos and Port
Harcourt in Nigeria (Abam et al., 2000; Fashae and Onafeso, 2011) are
already affected by floods and at risk of submersion. Resettlements are
planned for the Limpopo River and the Mekong River Delta (de
Sherbinin et al., 2011) and small island states may become uninhabitable
(Burkett, 2011).
Damage to physical assets due to weather events and climate is well
documented for poor urban settlements, often built in risk-prone