Comment on the subsidence adjustment applied to the Kemp et al. proxy of North Carolina relative sea level [Letters (Online Only)]

Kemp et al. (1) presented a new salt-marsh proxy record of relative sea level (RSL) from North Carolina (NCRSL). The salt marsh is slowly subsiding as a result of glacial isostatic adjustment (GIA), and the NCRSL record needs to be adjusted to remove [...]

Policy perils of ignoring uncertainty in oil palm research [Letters (Online Only)]

Success of the emerging Low Emissions Development paradigm in Southeast Asia depends on mitigating impacts of oil palm (OP) expansion on carbon-dense ecosystems, especially tropical peatlands. To this end, Koh et al. (1) mapped OP planted before 2002 [...]



Reply to Paoli et al.: Explicit consideration of model uncertainties [Letters (Online Only)]

Paoli et al. (1) raise some interesting criticisms of our article (2), but we think that they misinterpret important elements of our study, ignore our consideration of model uncertainties, and fail to recognize the wider significance of our work.We [...]

Long-term correlations in European socioeconomic conditions create a bias to conclusion that an invasion debt occurs [Letters (Online Only)]

Essl et al. (1) tested whether historical socioeconomic conditions have created an invasion debt in Europe (i.e., a suite of nonnative species that have not yet been discovered but whose establishment has been determined by previous socioeconomic [...]

Reply to Keller and Springborn: No doubt about invasion debt [Letters (Online Only)]

We recently showed (1) that, for a wide range of taxa, the current numbers of established alien species in 28 European countries were generally more closely related to socioeconomic indicators from the year 1900 than 2000. Thus, the establishment of [...]



Building interdisciplinary frameworks: The importance of institutions, scale, and politics [Letters (Online Only)]

Díaz et al. (1) proposed an “interdisciplinary framework for the analysis of relationships between functional diversity, ecosystem services, and human actions.” Their framework addresses the linkages between land uses and ecosystem service (ES) [...]

Reply to Romero and Agrawal: Unpacking the specific links between biodiversity, ecosystem services, and social diversity is an essential first step [Letters (Online Only)]

Romero and Agrawal (1) question the usefulness of our framework to link functional diversity with social actor strategies (2), arguing that it oversimplifies the complexity of the social dimensions of socioecological systems. We agree on the crucial [...]

Reply to Schuiling et al.: Different processes at work [Letters (Online Only)]

Schuiling et al. (1) question our conclusion (2) that the annual dissolution rate of olivine is limited by the saturation of waters with silicic acid (H4SiO4), which is one product of the dissolution reaction of olivine. In support of this point they [...]

Enhanced silicate weathering is not limited by silicic acid saturation [Letters (Online Only)]

Enhanced weathering of olivine as a means of sequestering carbon is investigated by Köhler et al. (1). Specifically, the study discusses the potential distribution of fine olivine powder, obtained from dunite mines, in the humid tropic regions of the [...]

Benefits of tropical crops for food security [Letters (Online Only)]

West et al.’s recent paper (1) compared tradeoffs of carbon and crop production in temperate and tropical zones. We welcome the empirical evidence in support of agricultural intensification rather than extensification. We strongly caution against [...]