Despite its prominence within food security debates, Food Sovereignty is still a developing and contested concept. This article illustrates two of the tensions within the Food Sovereignty literature through an analysis of the foodways of the Rama indigenous group in Nicaragua. Firstly, the results show that there is considerable heterogeneity in how the Rama source their food and that, for most Rama, engagement with the market...

Over the course of the last decade the concept of the Anthropocene has become widely established within and beyond the geoscientific literature but its boundaries remain undefined. Formal definition of the Anthropocene as a chronostratigraphical series and geochronological epoch following the Holocene, at a fixed horizon and with a precise global start date, has been proposed, but fails to account for the diachronic nature of...

We present new high‐resolution pollen records combined with palaeoceanographic proxies from the same samples in deep‐sea cores SHAK06‐5K and MD01‐2444 on the southwestern Iberian Margin, documenting regional vegetation responses to orbital and millennial‐scale climate changes over the last 28 ka. The chronology of these records is based on high‐resolution radiocarbon dates of monospecific samples of the planktonic foraminifera...

The transition from the last glacial and beginning of Bølling–Allerød and Pre‐Boreal periods in particular is marked by rapid increases in atmospheric methane (CH 4 ) concentrations. The CH 4 concentrations reached during these intervals, ∼650–750 ppb, is twice that at the last glacial maximum and is not exceeded until the onset of industrialization at the end of the Holocene. Periods of rapid sea‐level rise as the Last Glacia...

Ocean Drilling Program Leg 155 Site 942 on the Amazon Fan is an ideal location for monitoring palaeoclimatic changes within a significant proportion of the Amazon Basin. We present n‐ alkane δ 13 C and taraxerol and laevoglucosan concentration records from this site covering the last 38 ka. The entire n ‐alkane δ 13 C record is constrained between −31‰ and −34‰, which is well within the isotopic range occupied by C 3 vegetatio...

The occurrence of a millennial‐scale bipolar climate seesaw has been documented in detail for the last glacial period and Termination. There is, however, debate whether it occurs during interglacials and if it does what influence it could have on future climate. We present here new evidence from a North East Atlantic Ocean deep‐sea core which supports the hypothesis for a Holocene bipolar climate seesaw. BENGAL Site 13078#16,...

Previous work has suggested that a species effect may be present in diatom oxygen isotope ratios ( δ 18 O diatom ). While predominantly attributed to be a size‐related species effect, currently the precise mechanism remains unknown. Here, two size fractions of diatoms (38–75 µm and >100 µm) covering the last 200 ka are analysed for δ 18 O from ODP Site 882 in the North‐West Pacific Ocean. Synchronous variations of up to 13‰ oc...

The paleoenvironmental context of plant and animal species evolution (including glacial migrations and population separations) is based on a very patchy and incomplete paleo‐phytogeographic record. It was our objective, therefore, to provide an additional source for paleovegetation comparison by presenting simulations from a state‐of‐the‐art fully coupled earth system model (HadCM3LC). We simulated potential paleovegetation di...

The millennial‐scale asynchrony of Antarctic and Greenland climate records during the last glacial period implies that the global climate system acts as a bipolar see‐saw driven by either high‐latitudinal and/or near‐equatorial sea‐surface perturbations. Based on the results of recent modelling of generic Heinrich and Dansgaard–Oeschger scenarios, we discuss the possibility that oscillations of the deep‐ocean conveyor may have...