Primary Productivity Example of climate change impacts on supporting services

Impacts of climate change on ecosystem services 13 seasonality Wang et al., 2016. In the summer, most arid and semi-arid regions of China show a negative correlation between temperature and NPP, while in the spring the correlation may be positive in certain regions. Temperature rise strengthens evapotranspiration and reduces soil moisture, which can result in drought and can limit growth during the summer. The authors found that an increase in precipitation is more beneicial to plant growth Hao et al., 2016. Liu et al. 2014 found that changes in extreme events also afect NPP. A vicious winter storm and extremely low temperatures in early 2008 resulted in a drastic decrease of NPP in forest and grass ecosystems in China’s Hunan province Liu et al., 2014. Studies related to primary productivity, as with disease and lood regulation and food production, may indicate that trends and luctuations related to climate change and extreme events have diferent, very locally speciic, impacts on ecosystem services.

2.4 Example of climate change impact on cultural services

Cultural services comprise a range of largely non- consumptive uses of the environment including the spiritual, religious, aesthetic, and inspirational wellbeing that people derive from the natural world; the value to science of an opportunity to study and learn from that world; and the market beneits of recreation and tourism. Coral reefs ofer an example of potential consequences of climate change for cultural services provided by ecosystems. Bleaching events in the past three decades have already caused declines in coral across the Great Barrier Reef Ainsworth et al., 2016. Global warming and ocean acidiication are likely to result in the widespread loss of coral reefs within a century Hoegh-Guldberg et al., 2007. Coral reefs are an important draw for tourism and source of recreation in many coastal countries Hoegh- Guldberg et al., 2007. Lane et al. 2015 conclude that climate change “could result in a signiicant loss of value associated with the diverse ecosystem services these habitats provide, including tourism, commercial harvest, and existence i.e. non-use values.” However, the efects are complex. Tourism itself–including boating, snorkelling and diving–can damage reefs UNEP, 2016 and there is evidence that reefs may have a natural ability to tolerate stress. Ainsworth et al. 2016 conclude: Our analysis reveals that the exposure to sub-lethal pre-stress events varies dramatically among reefs, with some having an inherent level of ‘protection from’ or ‘preparedness for’ the conditions that induce coral bleaching, whereas others experience multiple stress Field in Burkina Faso. Photo Credit: Zinta Zommers Impacts of climate change on ecosystem services 14 exposures in a single event. Recognizing such spatial variability is important when targeting management actions that aim to mitigate coral reef degradation in the future.

2.5 Loss and Damage to ecosystem services

It is clear that climate change afects many diferent ecosystem services, sometimes with positive and often with negative outcomes. To further assess negative impacts, a recent report analyzed discussion of diferent types of loss and damage in IPCC WG2 AR5 van der Geest and Warner, 2015. The authors assessed how often words associated with diferent types of impacts occur in one sentence with the words ‘loss’ or ‘damage’. The authors found that impacts on natural the grey bars and human systems the blue bars receive similar levels of attention in the AR5 report. Within natural systems, the AR5 report focuses attention on species, habitat, and biodiversity. Marine ecosystems are discussed more than terrestrial ecosystems. Loss or damage to ecosystem services is not speciically assessed. AR5 largely frames loss and damage in the context of either natural or human systems rarely making the link between the two see also Zommers et al., 2014. This relationship between needs to be further explored. Figure 2.5.1 Loss and damage to natural vs human systems. The threshold for inclusion in igure is set at 50. Words used in connection to impacts on human as well as natural systems were excluded from the igure. Source: Van der Geest Warner 2015 Economic Ecosystems Species Ice Production Coral Infrastructure Biodiversity Food Health Habitat Crop Reefs Agriculture Communities Livelhoods Human Glacier Forest Natural Social Ocean Buildings People Urban 50 100 Times the world co-occurs in a sentence with ‘loss’ or ‘ damage’ in IPCC WG2 AR5 150 200 250 300 Human Natural