FIRST PHOTOGRAPHIC RECORDS AND NEW DISTRIBUTION RANGE OF THE ENDANGERED LONG-TAILED NESOKIA NESOKIA BUNNII (KHAJURIA, 1981)

In the 1970s, the world knew the long-tailed nesokia Nesokia bunnii (Khajuria, 1981) (Rodentia, Muridae) from the Mesopotamian marshes of Garden of Eden in Southern Iraq. This distinct rodent was known from only five voucher specimens collected at the confluence of Tigris and Euphrates Rivers in southern Iraq while its occurrence in Southwestern Iran had never been reported. In the 1990s, a large extent of its natural habitat was catastrophically desiccated and the animal was last seen in the 1970s. Since then, the status of this elusive rodent was shrouded in mystery. In 2007, an extraordinary photograph of a carcass of this species came to the light from Hawizeh Marsh which was interpreted as concrete evidence of the species’ persistence in the marshes of southern Iraq after the desiccation in the last century. In 2021, after more than 40 years, exclusive photographic records of living N. bunnii were obtained for the first time from Central Marshes in southern Iraq and from Edhe’am Marsh in southwestern Iran. The new distribution range is highlighted in this note. Furthermore, the first photographs of living N. bunnii are provided along with notes on its ecology and behavior.

Changes in Mesopotamian Wetlands: Investigations Using Diverse Remote Sensing Datasets

Early civilizations have inhabited stable-water-resourced areas that supported living needs and activities, including agriculture. The Mesopotamian marshes, recognised as the most ancient human-inhabited area (~6000 years ago) and refuge of rich biodiversity, have experienced dramatic changes during the past five decades, starting to fail in providing adequate environmental functioning and support of social communities as they used to for thousands of years. The aim of this study is to observe, analyse and report the extent of changes in these marshes from 1972 to 2020. Data from various remote sensing sources were acquired through Google Earth Engine (GEE) including climate variables, land cover, surface reflectance, and surface water occurrence collections. Results show a clear wetlands dynamism over time and a significant loss in marshlands extent, even though no significant long-term change was observed in lumped rainfall from 1982, and even during periods where no meteorological drought had been recorded. Human interventions have disturbed the ecosystems, which is evident when studying water occurrence changes. These show that the diversion of rivers and the building of a new drainage system caused the migration and spatiotemporal changes of marshlands. Nonetheless, restoration plans (after 2003) and strong wet conditions (period 2018 - 2020) have helped to recover the ecosystems, these have not led the marshlands to regain their former extent. Further studies should pay more attention to the drainage network within the study area as well as the neighboring regions and their impact on the streamflow that feeds the study area.

The Ilisu Dam and Its Impact on the Mesopotamian Marshes of Iraq: Implications for the Future Directions of International Water Law

The law of international watercourses has been successful in providing some measure of assistance in conflict avoidance and resolution. However, evolution of this body of law, which has been gradual in nature, is facing challenges adapting to climate change and its grave consequences. Climate change is causing the glaciers of the world to melt, and resulting in unpredictable shifts in patterns of rainfall, thus seriously impacting shared watercourses. The history and ecology of the Tigris Euphrates Basin, and the issues surrounding Turkey’s recent impoundment of water behind the Ilisu Dam on the Tigris, provide an example highlighting such challenges. This monograph argues that international collaboration over transboundary watercourses is imperative for maintaining peace and stability and should force us to think of new ways to address these newly emerging and growing challenges in this field.

A forgotten rodent from the Garden of Eden: what really happened to the long-tailed nesokia rat in the Mesopotamian marshes?

The greater part of expected mammalian extinctions will be of smaller-bodied mammals, including rats which are more generally known only as pests and carriers of pathogens. We address the long-tailed nesokia rat, which is among the least studied Palaearctic mammals. The species is known from merely five specimens, collected between March 1974 and January 1977 within a radius of 30 km around Qurna inside the seasonally flooded Mesopotamian marshes in southern Iraq. In the 1990s, this extensive aquatic habitat has been deliberately reduced to <15% of its original area and the IUCN expressed fear that such a disaster “almost certainly” caused the extinction of the long-tailed nesokia. Although the interventions after 2003 reversed the shrinking trend and marshes started to expand, the continuous presence of the long-tailed nesokia could not be unambiguously confirmed. We provide meagre evidence suggesting that the rat might be still present in the marshes. Next, our habitat modelling shows that the area of the long-tailed nesokia might be more extensive than expected with a highly suitable habitat covering 15,650 km2 of Mesopotamian marshland in Iraq (between Basra and Salah Ad Din provinces) and the Hawizeh Marshes in the adjacent Iranian Khuzestan.

Anormogomphus kiritshenkoi Bartenev, 1913 (Odonata: Gomphidae) in Iran: some remarks on its biology, ecology and distribution

Anormogomphus kiritshenkoi Bartenev, 1913 was found in Iran in 2019, with more than 20 individuals observed at the Karkheh and Shadegan rivers, Khuzestan Province in SW Iran. In 2019 the first floods for decades occurred in this region with high water levels in the floodplains of the lower Karkheh and Shadegan rivers. We believe that this flooding of the lowland plains promoted the appearance of A. kiritshenkoi, because the species had not been seen for decades in the region. Most of the specimens were resting on plants of Suaeda aegyptiaca growing on small dams close to the riverside, probably creating a favourable microclimate in this saline and hot environment. The region covered by the Karkheh and Shadegan rivers is geographically part of the Mesopotamian Marshes, and A. kiritshenkoi was recorded from the Iraqi part of the marshes in the 1920s.