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Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

...and energy generation. Due to Ireland's relatively high rainfall and moderate temperatures, our soils are very favourable to the accumulation of organic matter and, consequently, carbon. Peatlands cover between 20% and 25% of the Irish landscape and contain two thirds of national soil carbon stocks. Pristine or undrained peatlands are long-term carbon sinks and sources of methane....

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

...period 2016 to 2020, with an average of 27,707 ± 888 kt CO2 equivalent per year. Within this, forest land and associated harvested wood products provide an important net sink despite forest on peatland being a source. Grasslands on mineral soils are also a net sink but are outweighed by emissions from grasslands on peat soils. The Government has committed to achieve net zero by...

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

...zero by 2050, that there must be a net sink thereafter, and that methane emissions must reduce by 50% and nitrous oxide emissions by 20%. This means we all also have to change our behaviour with respect to peatlands. In natural peatlands, mires, the production of biomass is larger than the decay and, as a result, dead plants accumulate as peat. This peat is conserved by permanent...

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

Brian Leddin: ...at a meeting of the committee last week that there is significant opportunity for carbon farming and the development of sphagnum moss. He said that, ultimately, it might be a solution to the shortage of peat in the horticulture industry. It seems that there is often a narrative that rewetting is about putting farmland out of use and out of use for food production but really it is about...

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

Professor Hans Joosten: The point of departure is that from a climate point of view, we have to rewet all peatlands. There is then the question of can we do on these lands from an economic point of view. We should not forget that these lands have been drained for productivity. Of course, when we change our diet substantially and substantially reduce the consumption of meat and dairy, it...

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

...would involve developing a simple scoring system on a field-by-field basis. Quite simply, in the case of the scoring systems that have been developed so far, an improved agricultural grassland on peat soils, with a water table that is 1 m or more below the surface of the ground for the vast majority of the year, is low scoring and is actively emitting carbon. If the water table has...

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

...at less cost. There has been some work done on that, which I would happily share. I did not do it but I am familiar with work that can share in that regard. I refer to planting trees on peat, for example. As much as it is complicated and we should be careful before we change that, we should not do any more of it. However, when one brings that consideration into account, it...

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

Alan Farrell: I have two more quick questions. One of them is in relation to the measurement of the benefits of particular uses for particular pieces of land, whether they be rewetted peatland or rewetted forestry lands that were inappropriately used in the eyes of our witnesses. Do we have the expertise for that? Alternatively, does Dr. Moran believe we have the ability to develop that expertise to...

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

..., there were no ideas as to how to manage it. However, it was managed, in less than ten years. I see enormous progress with respect to the development of innovative land use on crops on rewetted peatlands. That is indeed possible. On whether it is possible to regrow a peatland, I have come from a peatland where peat extraction was taking place. As a young man, I studied the...

Joint Oireachtas Committee on Climate Action: Sequestration and Land Management-Nature Restoration: Discussion (Resumed) (22 Nov 2022)

Professor Hans Joosten: We have to look for economically viable alternatives to the current use of peatland. This will not involve dairy. We have to stop dairy farming on peat. Of course, we can think about water buffalo. They can graze in very wet conditions; it is not a problem. I have done this behind my house. We really have to think about the niche of the crops. Wetland plants...